August 2014

August 2014, Volume 16, No. 8

Proper Key Cutting Software and Instructions There have been several design changes made recently with the ignition keys on several GM models. When cutting new keys, the correct key codes must be used, so it’s critical that the key cutting machine is updated with the latest software. Plus, using the proper key cutting techniques will help in producing a correct key while minimizing waste.

BD LASER KEY CUTTING When cutting a milled side-cut key for 20102014 Camaros, the BD Laser Max key cutting machine may be used. It’s important to check that the machine is updated with the required software. The correct software version, which includes the 2010-2014 Camaro, is: • SW4 • Build 360 • DB 11.32 Verify the existing software version in the BD Laser Max machine: 1. Turn on the BD Laser and enter the machine password. 2. From the main menu, select:

To update the BD Laser software: 1. Turn on the BD Laser and enter the machine password. 2. From main menu, select: a. SETUP/TEST (top center) b. SOFTWARE UPDATE (bottom left) c. UPDATE SOFTWARE (top left) d. INTERNET (top right) 3. Connect the BD Laser console to a working Ethernet cable.

a. MACHINE DATA b. MACHINE DATA i. Software version can be found under the word “console” c. MAIN to return to main screen For side-cut key cutting equipment other than BD Laser, contact the equipment representative for further information.

Updating Software If the BD Laser software needs to be updated, it can be downloaded via the Internet in approximately 10–15 minutes.

Modem connection on the console.

NOTE: Phone option will take pproximately 1 hour and is not recoma mended.

CONTENTS Proper Key Cutting Software and Instructions. . . . . . . . . . . . . . . . . . . . . . . . 1 Key Cutting Machine Maintenance and Resources. . . . . . . . . . . . . . . . . . . . . . . . . 2 Improper Connection of AFIT SIDI Diagnostic Kit Cables. . . . . . . . . . . . . . . . . . . 3 Binding Brake Pedal Pivot Bushing. . . . . . . . . 3 SPS Programming Tips. . . . . . . . . . . . . . . . . . 4 New Charger Receptacles Available. . . . . . . . 4 Pinched Instrument Panel Harness. . . . . . . . . 5 AWD Driveline Vibration Diagnosis. . . . . . . . . 5 New Lane Keep Assist Feature. . . . . . . . . . . . 6 Electric Power Steering System Diagnosis. . . 7 Wireless Charging System for Mobile Devices . . . . . . . . . . . . . . . . . . . . . . . . 8 Power Door Locks Unwanted Unlocking. . . . . 9 Front Door Window Jamming. . . . . . . . . . . . . 9 Transmission Fluid Leaking from Vent. . . . . . . 9 Rear Vision Camera Display Size . . . . . . . . . 10 Inoperative Remote Start . . . . . . . . . . . . . . . 10 Service Know-How . . . . . . . . . . . . . . . . . . . . 10 Car Issues – Fix It Right the First Time. . . . . 11 Truck Issues – Fix It Right the First Time. . . . 11 Customer Care and Aftersales

continued on page 2

Proper Key Cutting Software and Instructions – continued from page 1 4. Select OK. 5. Then wait … Once complete, the screen will display “UPDATE COMPLETE.” 6. If you receive a “START AXIS-FIRMWARE UPDATE?” message: a. If the original software was lower than 3.1, press YES. b. If the original software is higher than 3.1, press NO. NOTE: By selecting yes, additional time will be added to the process. It may seem as if the process is delayed. Please wait until you receive the message “UPDATE COMPLETE.” 7. Select OK.

2. The machine will instruct to use the sliding “tip stop.” A. Please be sure the tip stop is pushed to the right, and the tip of the key is positioned as shown. NOTE: It is not necessary to remove the guard as referenced in Bulletin #14294A.

PC+ FLASH KEY CUTTING The PC+ Flash® key cutting machine can be used for cutting new edge-cut keys on 2003-2007 ION; 2005-2010 Cobalt; 2005-2006 Pontiac Pursuit (Canada); 2006-2010 Solstice; 2006-2011 HHR; and 2007-2010 G5 and SKY models.

4. Hold the key in position with your thumb and then release the clamp lever. 5. Release thumb pressure on the key. 6. Repeat the process for the key inserted into the slot marked “2nd” (upper position). TIP: Using the thumb and forefinger allows for the key to be inserted at an angle, which may result in a mis-cut key.

LEARN KEYS

8. Disconnect Ethernet cable or phone line from the BD Laser console. 9. Return to the main screen. NOTE: It is not necessary to recalibrate the jaw or the cutter.

Key Cutting Procedure

Do NOT hold the key with your thumb and forefinger.

With the updated software, the Camaro keys can be cut. Follow these steps: 1. Select the following: A. Key Search B. Car Model Selection

1. Old style key with slot. 2. New style key with hole.

C. Chevrolet D. Camaro

Once new keys are cut, it may be necessary to learn the new keys to the vehicle. Refer to the appropriate Service Information to determine if the new keys require programming.

The old style key used on these models was slotted. The new style has a round hole on the side of the key.

Also verify that the new keys will lock and unlock the doors, trunk or any other applicable lock cylinders.

Key Cutting Procedure

For more information about available key cutting machines, visit GM Dealer Equipment (U.S.) at www.gmdesolutions.com or DES Canada (Canada) at www.des-canada.ca.

To properly cut a key using the “Thumbs Up” cutting method: 1. Press the lever marked “1st.” 2. Insert the tip of the key into the front of cassette slot marked “1st.” Be sure the tip of the key is properly positioned in the jaw.

Thanks to Kent Woiak

3. Using ONLY your thumb, push the key into the slot until the key stops (let the guides do their work).

Key Cutting Machine Maintenance and Resources Taking care of your key cutting machine will help in getting the right key cut correctly every time. There are several steps that can be taken to ensure the proper maintenance and set up of key cutting equipment.

To view videos on several Ilco key machines, go to http://www. kaba-ilco.com/key-systems/literature-support/videos/348784/ key-machines.html. If a key cutting machine manual has been misplaced, many manufacturers offer their manuals online.

Several manufacturers offer online video tutorials explaining the features and operation of their key cutting machines. These videos include a variety of information, such as how to set up a machine when switching from cutting an edge-cut key to a milled side-cut key (or High Security key).

For more information about available key cutting machines, visit GM Dealer Equipment (U.S.) at www.gmdesolutions.com or DES Canada (Canada) at www.des-canada.ca. Thanks to Kent Woiak

2

August 2014

Avoiding Improper Connection of Cables with the AFIT SIDI Diagnostic Kit Recently, the Active Fuel Injector Tester (AFIT) Spark Ignited Direct Injection (SIDI) Diagnostic Kit, essential special tool CH-47976-500A, was released to test fuel injectors on SIDI engines. A recent Global Connect message was sent to remind technicians to follow the instruction manual when connecting the Drive & Measurement Unit (DMU) cables.

The DMU should be placed in the engine compartment and connected to the vehicle’s 12-volt battery and to the MCU. Select a vehicle on the AFIT MCU and then select an injecThe G1 or G2a cable must be plugged into the tor test. Follow DMU only. the on-screen instructions/ prompts on the MCU to connect to the vehicle. When prompted, with the ignition off, connect the DMU cable to the vehicle ECM harness connectors.

The G1 and G2a cables, included in the SIDI diagnostic kit, are to be plugged into the DMU, not the MCU.

If the instruction manual is not followed correctly, the engine may unintentionally crank and damage may occur to the Transmission Control Module. Two cables are provided with the kit for the DMU: • G1 cable for I4 engines • G2a cable for V6/V8 engines

INCORRECT PROCEDURE It is physically possible to plug either the G1 or G2a cable into the AFIT Main Control Unit (MCU). THIS IS INCORRECT. If this is done, the engine may unintentionally crank and damage may occur to the Transmission Control Module.

CORRECT PROCEDURE The G1 or G2a cable must be plugged into the SIDI DMU only. When testing an SIDI engine using the SIDI diagnostic kit, do not connect the adapter cables to the vehicle until instructed to by the AFIT MCU. The MCU should be placed in the vehicle cab and plugged into the power adapter.

Avoid Incorrect Operation To help avoid incorrect cable hookup, two permanent special connector adapters will be shipped to dealerships at no charge within the next few weeks. When they arrive, it will be necessary to install the adapters onto the connector ends of the G1 and G2a cables. Detailed instructions will be included.

Connect the DMU cable when prompted.

Until the special connector adapters are received, the AFIT SIDI Kit may still be used for vehicle service procedures. However, it is critical that the cable connections be followed exactly as outlined in the AFIT instruction manual. Thanks to Chuck Berecz

Binding Brake Pedal Pivot Bushing On some 2010-2012 LaCrosse, SRX; 2011-2012 Regal; and 2013 Malibu models, the brake pedal may not raise or appear stuck down after a normal braking event. This condition may occur in high temperature and humidity conditions and may not be repeatable. The brake lights will remain on and the brakes may drag after the pedal is released. A pop, click or snap noise may be heard when the brake pedal is applied or released. If this condition is intermittent, allow the vehicle to idle for 30 minutes with the climate controls on max heat in the floor mode to try to induce the condition.

The poor brake pedal operation may be due to a bind in the brake pedal pivot bushing. If diagnosis confirms the pivot bushing as the cause, replace the brake pedal arm. TIP: Be sure to use the two new retaining clips that accompany the brake pedal arm. To identify the correct brake pedal arm to order, refer to the Electronic Parts Catalog for the specific vehicle model and model year being serviced. The parts are no longer available from the Warranty Parts Center. Thanks to Christopher Crumb

August 2014

3

SPS Programming Tips Before programming a vehicle control module using the GM Service Programming System (SPS), there are several steps t echnicians can take to assist in completing a successful programming event. While the service shop and network environments are different at each dealership, here are a few recommended best practices.

c ontinues using these cached files and the required data is then transmitted from the PC to the vehicle module by way of the MDI and DLC.

Recommended setup and configuration:

If an error or connection problem occurs during file retrieval, it may be necessary to restart or recover and carry on retrieving the required files. If a communication error develops while transmitting to the vehicle, there is a risk of damage to the vehicle module that may be unrecoverable. Because of this, a USB connection from the Techline PC to MDI is a best practice.

• Place the Techline PC next to or inside the vehicle (if it’s a Techline laptop computer).

Trouble-Free Programming

• A laptop computer should be plugged in to ensure the laptop battery will be maintained during the programming event.

Several factors to consider to help ensure trouble-free programming include:

• Connect the PC to the Internet/TIS2Web via a quality LAN cable or reliable Business Grade Wi-Fi access point.

Dedicate the Techline PC (laptops preferred) — Placing a laptop PC inside the vehicle during programming ensures the PC remains dedicated to that function. This helps to minimize risk of someone accidentally interrupting the programming process by multitasking the PC. Laptops are preferred because their portability permits placement in the vehicle and the internal battery provides additional insurance in the event of a temporary AC power interruption during programming. A power supply should be used at all times.

Setup/Configuration

• Connect the PC to the Multiple Diagnostic Interface (MDI) using the USB cable method. • Connect a Midtronics® GR8 (Essential Tool EL-50313), set up in Power Supply Mode, or an approved Midtronics® PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent to maintain proper battery voltage during programming when required. • To ensure the computer remains active, adjust the Microsoft Windows® “Power Options.” Select the “High performance” power plan and set it to “Never” sleep in either ‘On Battery’ or ‘Plugged In’ modes.

Prevent PC going into Sleep mode — Laptops are typically configured to conserve power using Power Management techniques. Disable or adjust the Windows® Power Options to prevent the computer from going to sleep during the programming event.

Recommended Process Rationale

Choosing an MDI connection method for SPS — MDI connections are critical to the success of module programming. Reliability takes precedence over convenience, so keep it simple. Connecting the MDI directly to the Techline PC via the USB cable is recommended in order to maintain an error-free connection between the PC and vehicle module (via the MDI and DLC). This method is simple, easy and eliminates any potential for a network problem to interfere while transmitting data to the module during programming. Quality/Reliability of shop network (LAN) — Wi-Fi hardware used by dealerships varies greatly and is difficult to qualify. Techline recommends Business Grade hardware for the Wi-Fi Access Points (AP). Hard-wired cable connections to the LAN are considered more reliable than Wi-Fi and may be more suitable if not near a reliable Wi-Fi connection. Beware that cables are still prone to physical damage, such as deterioration of the cable or connector, which is not always visually evident. If a cable is suspect, substitute another cable.

SPS programming process

During SPS programming, the required data/calibration files are retrieved from the TIS2Web server. They are downloaded completely, verified and cached onto the Techline PC before module programming can begin. When ready, programming

Thanks to Ron Myers

New Charger Receptacles Now Available Some 2011-2014 Volt and 2014 ELR models may have one or all of the following conditions:

Inspect the Drive Motor Battery Charger Receptacle for micro cracking or water intrusion.

• Vehicle will not charge the high voltage battery

If an issue is found with the charger receptacle, a new, updated charger receptacle has been released to address the issues listed above. Replace the charger receptacle with the correct part number for the vehicle being repaired.

• Current or history charging DTCs set, including DTCs P0D22, P0D26, P0D58, P0D59 • The vehicle will not shift out of Park TIP: Before any repairs, follow the diagnostic procedures for any specific DTCs, ensure the charge cord is functioning properly, and verify that the issue is not a result of the charging infrastructure.

Thanks to Paul Radzwilowicz 4

August 2014

UPDATE: Pinched Instrument Panel Harness

Use Rear Axle Ratios for AWD Driveline Vibration Diagnosis

Depending on vehicle options on some 2015 Escalade models, Silverado, Suburban, Tahoe, Sierra and Yukon models; and 2014 Silverado 1500 and Sierra 1500 models, any of the following conditions may be present:

During diagnosis of a driveline vibration on the following AWD vehicles: 2010-2015 Equinox, Terrain, Captiva; 2008-2009 Saturn VUE; 20092014 Traverse; 2008-2014 Enclave; 2007-2014 Acadia; 2007-2010 Saturn OUTLOOK; 2010-2015 LaCrosse, Regal, XTS; 2010-2015 SRX; and 2014-2015 Encore and Trax; it’s important to note that the rear axle ratio is not the same as the RPO final drive ratio.

• Remote Keyless Entry (RKE) inoperative • Passive Entry and Passive Start inoperative • No Fob Detected message on the Driver Information Center • Service Tire Pressure System message on the Driver Information Center • Intermittent flashing Tire Pressure Monitor indicator • Tire Pressure Monitor DTCs • No audio • Touch screen inoperative • Steering wheel controls inoperative • BCM DTC B3101 (Keyless Entry Data Link Circuit), U1548 (Lost Communication with S79LR Window Switch), U1549 (Lost Communication with M45 Rear Wiper Motor), U154A (Lost Communication with S79RR Window Switch) • Radio and Human Machine Interface (HMI) DTC's U0028 (MOST Bus) and U0029 (MOST Bus Performance) • Rear power windows inoperative • Rear wiper inoperative • Dead battery

Instrument panel harness may be pinched between the left I/P instrument panel mounting bracket and the body.

These conditions may be caused by the instrument panel harness being pinched between the left I/P instrument panel mounting bracket and the body. In many cases, the complete harness is not pinched and it may not be apparent. When inspecting for a pinched harness, make sure the harness can be moved freely away from the bracket-to-body interface. To repair this condition, loosen the left I/P instrument panel mounting bracket bolts and pull the harness free. Open the harness and repair any damaged wires as necessary. Thanks to Jim Will

The RPO final drive ratio is the final drive ratio in the transmission. The rear drive axle on these AWD vehicles is driven by a transfer case (referred to as a PTU or Power Take-Off Unit) through a longitudinal propeller shaft. The PTU steps down the speed of the propeller shaft. The smaller propeller shaft fits in a tighter space as well as transmits less energy to the vehicle while in operation, reducing noise and vibration. The speed of the driveline is stepped back up by the rear axle to the output shafts and then to the rear wheels so that they match the speed of the front wheels. When using a diagnostic tool for a driveline vibration, such as the CH-51450 Oscilloscope Diagnostic Kit with NVH or the Without the correct rear axle ratio entered in the tool, the MTS 4100 vibration is listed as an unknown vibration. NVH Analyzer, these changes to the rear propeller shaft speed mean that any vibration generated by the components turning at rear With the correct rear axle ratio entered in the tool, the axle pinion/ vibration is listed under Propshaft. propshaft speed will be filtered out as “other” vibrations without a defined source in the tool. For diagnosis, the ratio in the rear axle must be input into the tool rather than the RPO final drive ratio. The rear axle ratios are as follows: Model

Rear Axle Ratio

LaCrosse, Regal, XTS and SRX

2.77:1

Equinox, Terrain, Captiva, and VUE

2.533:1

Traverse, Enclave, GMC Acadia and OUTLOOK

2.733:1

Encore and Trax

2.53:1

When the diagnostic tool requires the rear axle ratio or final drive ratio on one of these vehicles during diagnosis of a potential driveline vibration, input the rear axle ratio. Thanks to David MacGillis

August 2014

5

Operation of New Lane Keep Assist Feature Lane Keep Assist operates using parameters gathered by the vehicle's Active Safety Control Module. These parameters include the frontview camera, lateral offset of the vehicle, relative yaw angle, time to line crossing, velocity, steering angle and yaw rate. When an unintended lane departure is calculated, based on these parameters, the system operates the vehicle's electric power steering gear to steer the vehicle back into the intended lane.

A new feature called Lane Keep Assist (RPO UHX) is available on the 2015 Cadillac ATS, CTS Sedan, and frontwheel-drive XTS models. Lane Keep Assist is designed to assist the driver in keeping the vehicle from drifting out of an identified lane. The electric power steering provides a gentle steering push-back to the vehicle when an unintended lane departure is detected without the turn signal on.

location varies depending on the model. An LED in the button is off if the system is disabled and illuminated when the system is enabled.

What the System Does The Lane Keep Assist system uses the frontview camera to detect lane markings when the vehicle is travelling between 37mph (60 km/h) and 112mph (180 km/h).

Owners unfamiliar with this feature may be alarmed when the steering wheel appears to move without warning. Service personnel should become familiar with its operation and characteristics to be able to address customer concerns.

TIP: When servicing a vehicle with Lane Keep Assist, be aware that the front wheels could move without warning if the vehicle is running and in gear while elevated on a hoist.

When the System Does Not Seem to Work Properly

Lane Keep Assist Warning Lamp The Lane Keep Assist symbol on the instrument cluster illuminates green when the feature is ready to provide assist. The symbol is solid amber when intervention is occurring. It flashes amber to indicate a Lane Departure Warning. The flashing amber is accompanied by a chime or, if equipped, a vibration in the driver's seat.

A. Lane Keep Assist symbol B. Lane Departure Warning symbol

The Lane Keep Assist symbol is different from the Lane Departure Warning symbol. The frontview camera, located behind the windshield in front of the mirror, is used to detect lane markings within a distance of approximately 197 ft. (60 meters). The Lane Keep Assist button on the instrument panel is used by the driver to enable and disable the system. Button

The Active Safety Control Module communicates on a dedicated object bus to all four radar sensor modules and the frontview camera module. A fault on the object bus may result in multiple DTCs since the Active Safety Control Module may not be able to communicate with some or all modules on the bus. If there is a DTC set in any of the modules that the Active Safety Control Module uses as inputs, it will send a Service Driver Assist message to the Driver Information Center on the instrument cluster.

The Lane Keep Assist button on the ATS.

It gently turns the steering wheel if the vehicle approaches a detected lane marking without using a turn signal in that direction. It may also provide a Lane Departure Warning system alert as the lane marking is crossed. The Lane Keep Assist system will not assist or provide a lane departure alert if it detects that the driver is actively steering. TIP: The Lane Keep Assist system does not continuously steer the vehicle, but rather provides steering pushback, keeping the vehicle in the intended lane, using the electric power steering. The driver can override the event by applying 1.1 Nm to 1.5 Nm of torque to the steering wheel. The Lane Keep Assist event is complete after the vehicle returns fully to the lane.

The Lane Keep Assist system may not keep the vehicle in the lane or give a Lane Departure Warning alert, even if a lane marking is detected. Proper operation may be affected by factors outside the vehicle, including: • Close vehicles ahead • Sudden lighting changes, such as going through a tunnel • Banked roads • Poor lane markings, such as on two-lane roads • Dirt on the windshield in front of the camera lens • Tar marks, cracks, shadows, temporary lane markings and other road imperfections • Lane markings on one side of the road only (Lane Keep Assist provides assist only on the side with markings).

How the System Works

The driver is advised to turn off the system when these conditions are present; this does not indicate a system failure.

The system is enabled and disabled by the driver with the Lane Keep Assist/Lane Departure Warning button, which illuminates when the system is enabled.

In addition, do not use Lane Keep Assist while towing a trailer or on a slippery road, which may cause a loss of vehicle control. Thanks to Jean Hart

6

August 2014

Electric Power Steering System Diagnosis The 2014-2015 Silverado 1500 and Sierra 1500 and 2015 Tahoe, Suburban, Yukon and Escalade are equipped with an electronically operated power rack and pinion steering system. The system replaces conventional hydraulic pump, lines, control valves and pistons with an electric motor, a control module, and associated hardware. These components, along with the rack and pinion, are assembled into an integral steering gear. The system is not the same electric rack and pinion system used in previous model year hybrid vehicles.

Repair If evidence of moisture is detected during disassembly, replace the entire steering gear. Replacing only the power steering assist motor/control module is not a permanent repair. Refer to Electric Belt Drive Rack and Pinion Steering Gear Replacement in the appropriate Service Information. During removal and installation, the electric belt drive rack and pinion steering gear is extremely susceptible to damage. Dropping or prying on the electric belt drive motor controller module and/or electric belt drive rack and pinion steering gear may cause damage. If damage occurs, the electric belt drive motor controller module and/or electric belt drive rack and pinion steering gear will need to be replaced. Also observe normal service precautions to avoid damage and possible malfunction of the SIR system. These include securing the steering wheel in the straight ahead position before disconnecting the steering column, intermediate shaft or steering gear. Failure to do this may cause the SIR coil assembly to become un-centered.

Installation

Electric power steering gear assembly

During power steering assist motor installation, ensure that it is not misaligned with the steering gear housing; otherwise, proper belt tension will not be achieved. Misalignment of the belt on the pulley will damage the belt and the steering gear will need to be replaced. Use new power steering assist motor bolts.

A torque sensor integrated with the steering gear pinion in the steering gear detects a need for steering assist. This information, along with motor rotation and serial data, is processed by the control module, which is integral with the motor. The control module commands power to operate the AC electric motor, which drives a belt. The belt operates a ball-nut, which is in line with the steering rack, and provides assistance in moving the rack right or left as required.

Diagnosis and Moisture If normal diagnosis of an operating condition in the power steering system leads to removal of the electric motor, it is necessary to inspect the motor components for evidence of water intrusion. It is possible for water to intrude through a hole in a boot or a connector issue causing the leak path. Check belt tension using the GE-50576-A tension tester.

Use the GE-50576-A tension tester to achieve the proper belt tension. Strum the steering gear belt three times as close as possible to the center position between the two steering gear pulleys to get an average belt tension reading. Check the reading with the specification in the Service Information before tightening the motor bolts. If the tension reading is not within the specified Hz range, loosen the assist motor pivot bolt and rotate the motor clockwise to increase the tension or counterclockwise to reduce the tension on the belt. Tighten the pivot bolt and retest the belt tension three times. Once all installation is complete, perform the power steering control module setup procedure. Corrosion due to water intrusion

August 2014

Thanks to David MacGillis

7

Wireless Charging System for Mobile Devices A new Mobile Device Wireless Charging System for smartphones is optional on 2015 ATS sedan and coupe, CTS sedan, Escalade, Tahoe, Suburban and Yukon models. Compatible with Powermat and other in-phone wireless charging technologies, this convenient new feature eliminates the need for charging cords.

If a non-compatible device or metallic foreign object is detected, the system will not transfer power. The charger monitors its internal temperature and will shut down if it the charger temperature exceeds 185F (85C). The BCM will detect the device battery is charging and send a serial data message to the infotainment touch screen, which will indicate a device is currently charging. When the indicator is toggling on and off, it indicates a thermal limit has been reached and the device will not charge. Charging also may be interrupted while driving over rough conditions. Reposition the mobile device to continue charging.

An increasing number of smartphones have wireless charging either embedded or as an option. To charge a compatible device using the wireless charging system, the device is simply placed on the rubberized pad. The Mobile Device Wireless Charging System is an inductively coupled means for wirelessly charging mobile devices. It is capable of charging the batteries of many aftermarket devices, including cell phones, PDAs, pagers, MP3 players, etc.

TIP: For any Mobile Device Wireless Charging System concerns, refer to circuit/system verification and testing in the appropriate Service Information. A scan tool cannot be used since the system is not connected to any control module. No DTCs or data parameters are available.

A compatible device is one that is compliant with the Power Matters Alliance (PMA) or Wireless Power Consortium’s (WPC) Qi Standard, meaning that it is equipped with a PMA or Qi wireless charge “receiver” that will work with the charge “transmitter” installed in the vehicle. A device may use built-in charging circuitry or an adapter (external plug-in device which contains the charging circuitry).

Compatible Devices Following are some of the most popular devices that have built-in wireless charging capability or have wireless charging adapters.

Charging Surface Location

GM Wireless Charging Compatible Devices

The wireless charging mat is located inside the storage bin behind the motorized center instrument panel faceplate of the ATS and CTS sedan.

Phone

Built-In

Apple iPhone 4/ 4s

Energizer Mod: IC-IP4G

Apple iPhone 5/5s

Duracell /Powermat REC000078

Google Nexus 5

X

HTC Incredible2

On the Wireless charging mat in the ATS. Escalade, the wireless charging pad is located on the top of center console storage compartment lid.

Charging a Device To charge a device, place it on the charging surface in the vehicle (all other objects should be removed from the charging surface). There is a charging coil located in the center of the charging surface and the mobile device has a charging coil typically near the center of the device. These coils must be lined up in order for charging to proceed. With the device face up, move it around slowly until the battery charging symbol displays on the infotainment touch screen, indicating the device is charging.

When the Interruptible Retained Accessory Power (IRAP) relay is closed (when the vehicle ignition is in Run or Accessory position), the system is able to detect the device, establish communications with the device to confirm it is a compatible device, and then deliver charging power to the device via the wireless interface.

N/A HTC6350-WLDR

LG G2

X

N/A

LG Spectrum 2

X

N/A

Motorola Droid 4

Motorola Mod: MOTDRD4-WLDR

Motorola Droid Bionic

Motorola Mod: MOTBIO-WLDR

Motorola Droid Maxx

X

N/A

Motorola Droid Mini

X

N/A

Motorola Moto X

TIP: If the device does not charge, verify it is properly positioned on the charging surface. It may be necessary to rotate it 180 degrees to help establish a connection. Also, the use of a protective case may require more precise placement or may inhibit charging. Try removing the case.

Back Cover Model

Incipio MT231

Nokia Lumia 920

X

N/A

Nokia Lumia 928

X

N/A

Samsung Galaxy S4

Incipio Mod:SA-069-SLV Samsung Mod: EP-CI950IWK

Samsung Galaxy S5

Samsung Mod: EP-VG900BBU

Samsung Note 3

Samsung Mod: EP-CN900IWU

For the latest information about mobile device compatibility with the wireless charging system, go to www.gmtotalconnect.com. Thanks to Jean Hart

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August 2014

Power Door Locks Unlock after Auto Locking The power door locks on some 2013 LaCrosse, Regal; 2013-2014 Malibu, Sonic; and 2013-2015 Camaro and Spark models may unlock immediately after automatic locking o ccurs — usually at startup or while driving. This may occur after the vehicle has been in an accident where the vehicle’s airbag(s) and or seatbelt(s) have been replaced due to being deployed but the Sensing and Diagnostic Module (SDM) was not replaced because DTC B0052 (Deployment Commanded) could be cleared. Using a scan tool, build the vehicle, select “Inflatable Restraint Sensing and Diagnostic Module” and then select “Identifica-

tion Information.” If the value for Software Module 1 Identifier is greater than zero, the SDM has commanded a deployment and is the source of the door unlock command. This can be confirmed by removing the fuse that provides B+ to the SDM. If the doors no longer unlock after automatic locking, replace the SDM. Refer to the Airbag Sensing and Diagnostic Module Replacement section of the appropriate Service Information for SDM replacement instructions. Thanks to Christopher Crumb

Front Door Window Jamming The driver or passenger front door window may become jammed and will not rise above half-way on some 2011-2014 Caprice PPV, SS, and 20082009 G8 models. The front edge of the door glass may become dislodged from the front window run channel and seal. This usually occurs when the front door has been slammed closed with the window fully lowered.

After installing a remanufactured transmission or valve body on 1997-1999 Riviera, Aurora, 88; 1997-2004 Regal; 1997-2005 Century, LeSabre, Park Avenue, Bonneville; 2002-2007 Rendezvous; 2005-2007 Terraza, RELAY; 2005-2009 LaCrosse (Allure); 2006-2011 Lucerne; 1997-2001 Lumina; 1997-2007 Monte Carlo; 1999-2005 Venture; 2001-2011 Impala; 2005-2008 Uplander; 20062007 Malibu; 1997 Cutlass Supreme; 1998-2002 Intrigue; 1999-2002 Silhouette; 2001-2002 Aurora; 1997-2008 Grand Prix; 1998 TranSport; 19992008 Montana; 2001-2005 Aztek; and 2006-2009 G6 models, equipped with the 4T65 automatic transmission (RPOs M15, MN7, MN3, M76 and MD7), transmission fluid may leak from the vent, which may be caused by a worn, oversized pressure regulator valve bore in the valve body. The worn valve body may cause line pressure to Vent assembly leak into the exhausted port just under the transmission vent.

Front window run channel

TIP: Once the glass has become dislodged from the front window run channel and seal, the metal channel will likely be distorted and need to be replaced. The seal normally does not require replacement.

Add Foam Spacer When replacing the window front run channel, it’s necessary to add a foam spacer (part number 92289653) to both front doors.

Position the spacer 5 mm (0.20 in.) from the bottom end.

To add the foam spacer, remove the front window run channel from the door. Fit the foam spacer to the bottom outboard side of the new replacement front window run channel. Ensure the spacer is centered, glue side down, on the channel and positioned 5 mm (0.20 in.) from the bottom end.

Transmission Fluid Leaking from Vent

If transmission fluid is evident, inspect the transmission for the following conditions: • Transmission fluid level overfilled

Spacer (1) against the side intrusion beam (2).

• Incorrect fluid level indicator • Water or coolant in the fluid (milky fluid)

With the new front window run channel in the door, the foam spacer should touch against the side intrusion beam.

• Plugged or damaged vent • Transmission case porous in the vent area • Case cover assembly (channel plate) not torque properly

After properly securing the run channel and window glass on the affected door, add the foam spacer to the other front door between the front window run channel and the door side intrusion beam.

• Case cover assembly gasket installed incorrectly If the cause of the transmission fluid leak is not found after inspected these items, the valve body should be replaced.

For additional information, refer to Bulletin #12-08-64-004A. Thanks to Brad Thacher

Thanks to Mark Kevnick August 2014

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Rear Vision Camera Display Size On the 2014-2015 Sonic, Spark and Trax equipped with the Rear Vision Camera (RPOs UF7 and UVC), the camera display only occupies approximately 3/4s of the infotainment screen.

GM TechLink is published for all GM retail technicians and service consultants to provide timely information to help increase knowledge about GM products and improve the performance of the service department.

This is a normal characteristic of the camera display and the Rear Vision Camera. Do not replace any parts for this condition. Thanks to Ange Girolamo

Rear Vision Camera display on the infotainment screen.

Inoperative Remote Start On some 2015 Escalade, Silverado, Suburban, Tahoe, Sierra and Yukon models; and 2014 Silverado 1500 and Sierra 1500, the remote start feature may be inoperative. In addition, if equipped, the power liftgate (RPO TB5) may be inoperative with the ignition off. If the ignition is turned on, the power liftgate will operate correctly. DTC P2537 (Ignition Accessory Switch Circuit Low Voltage) may be set.

Lisa G. Scott GM Customer Care and Aftersales Technical Editor:

Mark Spencer / [email protected] Production Manager:

5by5 Design LLC / [email protected] FAX number:

3 1-248-729-4704 Write to:

* TechLink

PO Box 500 Troy, MI 48007-0500 GM TechLink on the Web:

: GM GlobalConnect

Circuit 5985 TIP: Circuit 5985 is a low amperage signal circuit and it may not be able to power certain test lights or bulbs. The use of a voltmeter to test this circuit is required.

Thanks to Jim Will

Editor:

Graphic Design:

Use a voltmeter to check circuit 5985 at the ECM and TCM. There should be approximately battery voltage present with the ignition on. After the ignition has been turned off, there may still be voltage present because the BCM may still be awake. This is normal. If no or low voltage is found, use the wiring diagram in the Service Information to perform normal circuit diagnosis.

Service Know-How

John Meade GM Customer Care and Aftersales

Marie Meredith

These conditions may be caused by the ECM and/or TCM not receiving the 12-volt accessory wakeup signal from the BCM. Reference accessory wake up circuit 5985 in the wiring diagrams under Accessory Wakeup and Communications Enable in the appropriate Service Information.

10214.08D Emerging Issues

Publisher:

August 14, 2014

To view Emerging Issues seminars: • Log in to www.centerlearning.com – Select Resources, and then Video on Demand; or – Select Catalog to search for the course number, and then select View > Take or Continue Course

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General Motors service tips are intended for use by professional technicians, not a “do-it-yourselfer.” They are written to inform those technicians of conditions that may occur on some vehicles, or to provideinformation that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the information applies to your vehicle or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information. Inclusion in this publication is not necessarily an endorsement of the individual or the company. Copyright© 2014 General Motors All rights reserved.

August 2014

Car Issues – Fix It Right the First Time Model Year(s)

Vehicle Line(s)/Condition

Do This

Don’t Do This

Reference Information/ Bulletin

2013-2014

ATS, CTS — Information on correct hoist lifting procedure to prevent vehicle damage

Use care when hoisting the ATS and CTS to avoid rocker molding damage

Avoid the use of oversized hoist pads

PI1213

2013-2014

ATS — Rattle and/or squeak front passenger compartment, instrument panel or seat area

Inspect the finish panel on the front of the seat for being loose or the cause of the noise

Remove the dash or replace the glove box door

PI1225

2013-2014

ATS, CTS — Mobile telephone microphone poor performance when using Bluetooth

Install foam patch ordered from CCA Parts

Replace microphone or other parts

PI1162B

2014

CTS Sedan — Engineering Information - Backup key does not stay inside RKE transmitter

Refer to this EI and speak to engineer before replacing parts

Replace key or key fob unless directed to by the EI bulletin or the engineer

PIE0296

2007-2012

Vue, Outlook, Aura, Torrent, G8, G6, Terrain, Acadia, Impala, Traverse, Camaro, Malibu, Equinox, Captiva, CTS, SRX, STS, Enclave, LaCrosse, Allure — Information on high feature V6 timing chain kits and chain guide replacements, DTCs P0008, P0009, P0016, P0017, P0018 and/or P0019

Use chain kit

Order separately from Parts

12-06-01-009E

2014

Camaro — MIL On, Engine Power is Reduced message in DIC, DTC P16F3 set

Calibrate vehicle

Replace the ECM

PI1222

2005-2014

XLR, Corvette — Information on visual brake rotor surface cracking

Review service communication 05-05-23-007B with the customer

Replace the rotor for surface cracks

05-05-23-007B

2014

Corvette — Front edge of door contacting rear edge of fender while opening door

If you find door to fender contact, change the fender's center support bracket fasteners and adjust fender to gain clearance

Adjust the door without checking fender alignment to the door

PI1220

2013-2014

Lacrosse, ATS, SRX, XTS, CTS, ELR, Corvette, SS, Silverado 1500, Sierra 1500 — Power driver seat inoperative, power outside mirror inoperative

Reflash the memory seat module when required

Replace the memory seat module

PI1103B

Truck Issues – Fix It Right the First Time Model Year(s)

Vehicle Line(s)/Condition

Do This

Don’t Do This

Reference Information/ Bulletin

2014

Sierra, Silverado — Rattle noise at front floor center console

Add felt flocking tape

Replace console components

PI1210

2014

Sierra, Silverado — Excessive wind noise from front side door glass area

Refer to these hints and aids in wind noise diagnosis

Replace seals or weather-strips without verifying the conditions in the bulletin first

PI1221

2007-2014

Sierra, Silverado — Information on available BCM calibrations to restore bulb outage detection on vehicles produced by a second stage manufacturer (upfitter), turn signals flash fast after factory box removed

Reconfigure the BCM to the appropriate calibration if applicable

Try to alter the lighting system or harness

07-08-42-006I

2013-2014

Traverse, Enclave, Acadia — Intermittent radio shut off, instrument cluster gauges inoperative, blind spot indicator flashing, multiple communication codes set

Inspect and re-route harness to eliminate possible chafe condition

Replace Side Blind Zone Module

PI1202

2007-2014

Yukon, Yukon XL Denali, Yukon XL, Tahoe, Suburban, Sierra, Silverado, Avalanche, Escalade EXT, Escalade ESV, Escalade — Dust intruding into cabin interior

Offer owners a solution for operation in dusty areas

Perform this modification without owner's knowledge and approval

PI1216

2007-2010

Yukon XL Denali, Yukon XL, Yukon Denali, Yukon, Tahoe, Suburban, Avalanche, Escalade EXT, Escalade ESV, Escalade — MIL Illuminated, DTCs P0442, P0446, P0455 or P0449 set - fuel tank hard to fill - moisture, water, corrosion at EVAP CVS valve

Update using the parts listed in the bulletin

Try to repair the existing system

09-06-04-028D

1999-2006

Yukon XL Denali, Yukon XL, Yukon Denali, Yukon, Tahoe, Silverado, Suburban, Escalade EXT, Escalade ESV, Escalade, Avalanche — Pre-formed and pre-flared hydraulic brake pipe kits now available for service

When brake line set replacement is necessary, repair using these more economical kits

It is no longer necessary to create brake line assemblies using bulk tubing

13-05-22-001A

Customer Care and Aftersales August 2014

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