June 2012

June 2012, Volume 14, No. 6

High-Voltage Battery Pack Coolant Bleed Procedure There is a new high-voltage battery coolant bleed procedure for removing air trapped in the high-voltage battery coolant system of the 2011-2012 Volt. The bleed procedure is required after completing the Volt Side Pole Impact Enhancement procedure and requires the use of the Vac-N-Fill equipment. This procedure also is required any time the high-voltage battery coolant loop is opened. Prior to performing the coolant bleed procedure, make sure your GDS 2 is up-to-date with the latest GM Global diagnostic package. The automatic coolant bleed procedure is found under the following GDS 2 path: Module Diagnostics > Hybrid Powertrain Control Module 2 > Control Functions > Hybrid/EV Battery Pack Coolant Pump Bleed Procedure. This procedure will take up to one hour to complete. The vehicle must remain in service mode during the procedure. Follow the on-screen instructions to complete the programming. continued on page 2

TECHLINE news

Contents

Quarterly Techline Infotainment DVD

Coming in June, a new Techline Infotainment DVD will be released that is to be used in conjunction with TIS2Web Service Programming System (SPS) in the programming/configuration of next-generation radios such as MyLink, IntelliLink and CUE (RPOs UFU, UP9, UHQ, IO5, IO6, UF7). The Techline Infotainment DVD will provide a fast, effective alternative to downloading large data files through the dealership Internet connection. The DVDs will be distributed on a quarterly basis; shipped to the attention of the service manager at each dealership.

How It Works The Techline Infotainment DVD is used by the service department only for radio reprogramming. Do not insert the Techline Infotainment DVD into a vehicle’s radio or navigation system. The Techline Infotainment DVD must be installed onto each Techline PC. When a radio reprogramming procedure requires files to be copied to a USB device, TIS2Web (SPS) will use files downloaded from the Techline Infotainment continued on page 2

High-Voltage Battery Pack Coolant Bleed Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Quarterly Techline Infotainment DVD. . . . . . . . . . . 1 Understanding the Effects of Wheel Alignment . . . 3 Difficulty Rotating the Key to the Lock Position. . . 4 Four Odor from Vehicle Interior. . . . . . . . . . . . . . . . 4 Condensation in Tail Lights or Water in Trunk . . . . 4 HVAC Temperature Display . . . . . . . . . . . . . . . . . . 4 Tire Sidewall Irregularities. . . . . . . . . . . . . . . . . . . . 5 Emissions 2 Fuse Open. . . . . . . . . . . . . . . . . . . . . . 5 Corrosion Protection of Metal Panels. . . . . . . . . . . 5 Memory Seats Lose the Stored Position. . . . . . . . . 6 Multiple Communication Codes. . . . . . . . . . . . . . . . 6 Water/Dust through Openings under the Bed Rails. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Inoperative Instrument Panel Cluster . . . . . . . . . . . 7 Turn Signals Flash Faster Than Normal. . . . . . . . . . 7 Automatic Climate Control Blows Cold Air before Engine Coolant is Warm. . . . . . . . . . . . . 7 Car Issues – Fix It Right the First Time. . . . . . . . . . 8 Truck Issues – Fix It Right the First Time . . . . . . . . 8 Service Know-How . . . . . . . . . . . . . . . . . . . . . . . . . 9

Customer Care and Aftersales

High-Voltage Battery Pack Coolant Bleed Procedure – continued from page 1 The power electronics/ charging and battery cooling systems require a 50/50 mix of DEXCOOL and de-ionized water.

TIP: The coolant reservoir fill level for the high-voltage battery has changed. The coolant level should be up to the top of the seam in the reservoir. After the procedure, the coolant level should be at The power the top of the reservoir seam. electronics coolant reservoir fill level has not changed.

Use the Update GDS 2 with the latest GM Global Vac-N-Fill diagnostic package. to pull a vacuum of at least 15 in. (381 mm) Hg on the battery cooling system side of the high-voltage battery coolant reservoir. This vacuum needs to be maintained while all of the air is purged from the system.

Refer to SI document ID #2808008 and the Chevrolet Volt Customer Satisfaction Program seminar (18420.15V) for more information on the bleeding procedure.

During the procedure, the coolant level will drop below the reservoir. Do not break vacuum to fill the reservoir. Use the Vac-N-Fill equipment to fill the reservoir. This may have to be done several times during the procedure to prevent a low coolant condition that would allow air into the system.

Thanks to Keith Newbury and Ashmi Haria

TECHLINE news

continued from page 1

DVD to a folder on the Techline PC. The programming process is similar to the current process, using a USB flash drive, following SPS instructions.

2. Wait for the program to start. This may take several minutes. A GM Techline Cache pop-up window will be displayed.

TIP: This programming procedure requires use of a dedicated USB flash drive. SPS erases all content from the flash drive before downloading new files or software.

3. Two main options to use the DVD will be presented – Copy or Register. Select one. Copy is recommended. The content of the DVD will download to the Techline PC. Register can be chosen when there is not enough hard drive space to install files on the Techline PC. When Copy is selected, Register is not necessary.

Installing the DVD Before installing the Techline Infotainment DVD, confirm that the Techline Cache Notifier is installed. Look for the Techline Cache Notifier icon on the taskbar.

If you choose Copy, the content of the DVD will download to the Techline PC. • Select a directory for the installation (Default is recommended). • Click Select. A progress bar is displayed to track progress.

Techline Cache Notifier icon

• When Copy Successful is displayed, click OK.

If the Techline Cache Notifier icon is not present, it must be downloaded and installed from TIS2Web. Before installing the Techline Cache Notifier, close all other applications.

If the Copy option is not successful, it may be due to insufficient computer hard drive space. If this condition is encountered, the Register option is recommended.

1. Insert the Techline Infotainment DVD into the DVD drive of the Techline PC.

If you choose Register, the program will run from the DVD drive of your Techline PC.

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• Upon selecting Register, the DVD will register automatically. • When Registered Successful is displayed, click OK. TIP: When Register is selected, the DVD must remain in the Techline PC. 4. When the DVD initialization process is complete, remove the DVD and store it in a safe place for future use. Now that the Techline infotainment DVD files have been either cached (installed) or registered (ready to run from DVD), TIS2Web SPS will prompt when files will need to be copied to a USB flash drive during a radio programming/configuration procedure.

Techline Support For any questions or concerns with the installation of the Techline Infotainment DVD, contact the Techline Customer Support Center (TCSC) at 1-800-828-6860 (English) or 1-800-503-3222 (French). Replacement DVDs can be obtained from Archer by calling 1-866-700-0001. In Canada, contact TCSC to arrange for a replacement DVD. Thanks to Mike Waszczenko

June 2012

Understanding the Effects of Wheel Alignment All of GM’s standard wheel alignment service procedures were recently updated in Bulletin #05-03-07-009. Be sure to refer to it for complete details on proper wheel alignment service. For a reference sheet that can help in diagnosing vehicle lead/pull or steering wheel angle conditions, click below. The reference sheet should be printed and kept near the alignment machine.

Wheel Alignment Reference Sheet Along with the bulletin information, here are some additional tips and highlights.

Vehicle Condition and Equipment Be sure there is nothing about the vehicle’s condition or equipment that could contribute to a mis-alignment condition. Things to consider include:

Steering Wheel Angle – On the RO, always note which direction the steering wheel is clocked (left/counterclockwise or right/clockwise) TIP: When dealing with a verified steering wheel angle condition, remember that front and rear toe are the only alignment values that affect the angle of the steering wheel. Vehicle Pull – Drive the vehicle to verify that the vehicle does have a pull condition and not a steering wheel angle issue. A vehicle with a valid pull condition will pull to one side or the other regardless of steering wheel angle.

Vehicle Damage – Check for evidence of accidental damage that could affect alignment.

TIP: Always ensure tire pressures are set to correct specifications before and after evaluating a vehicle.

TIP: While major damage can be obvious, subtle items like scuffed wheels or tire sidewalls may indicate curb damage that can affect alignment.

Alignment Settings – Front or rear toe values being out of specifications do not cause an otherwise true vehicle pull. If only front or rear toe values are out of specification on a vehicle with a confirmed pull issue, something else is causing the pull.

Added Equipment – Check for equipment that may significantly affect vehicle mass. TIP: Significant additional mass can affect the trim height and wheel alignment of the vehicle. This may require a customer-paid wheel alignment if the items are placed in the vehicle semipermanently. Upfitters are instructed to realign the vehicle after installation of these types of items.

Understanding the Customer Concern Repair Order – It is important to include as much information as possible in the RO, including the confirmed customer concern and the complete before and after alignment measurements on the vehicle.

June 2012

Road Slope – High road slope angles can cause a vehicle to drift one way or the other. Use a road that is as flat as possible for evaluations.

A vehicle pull condition may be caused by tires or alignment settings.

Suspension – Verify that the vehicle suspension has not been altered, including the addition of an aftermarket suspension lift or lowering kit.

Vehicle Use – Check that the vehicle has seen normal use rather than abuse. The condition of the tires and the vehicle in general may indicate very aggressive driving.

The Effects of Road Conditions

Causes of Vehicle Pull Tires – If a pull condition has been verified but the alignment settings all are within specifications, the issue may be in the tires. Certain tire differences left to right may cause a vehicle pull. Temporarily swapping the front tires left to right and re-evaluating is a simple way to verify a tire issue. Always note if tires are directional and not able to be permanently swapped side-to-side.

Wheels and Tires – Verify that wheels and tires are original equipment or Official GM Accessories.

It is possible for customers to confuse a steering wheel off angle condition as a vehicle pull condition, as they may be trying to hold the wheel centered (level) on a straight road, which would be adding a slight steering input to the wheels. If this is the case, note it on the Repair Order, including the direction the vehicle is pulling.

REQUIRED: Prior to any measurement on the alignment machine, confirm the current specifications and tolerances in the appropriate Service Information. Do not assume the numbers in the alignment machine are correct and up-to-date.

Effects of road slope

Trough Wander/Tramlining – Troughs or grooves in the road can pull a vehicle to one side or the other, depending on where the tire is located in the groove. The tires will always want to pull the vehicle up the wall of the trough. Adjusting alignment settings will not improve a trough wander condition or the sensitivity of the vehicle to trough wander.

If Cross Camber and Cross Caster are within GM specifications listed in the appropriate Service Information, it generally means that they are not the reason for a vehicle pull concern. Positive Value

Negative Value

Front Cross Camber (LH minus RH)

Pulls Left

Pulls Right

Front Cross Caster (LH minus RH)

Pulls Right

Pulls Left

Front and Rear Toe

Does not cause vehicle pulls

Does not cause vehicle pulls

Effects of trough wander

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Click here for the printable reference sheet on the effects of wheel alignment. Thanks to David MacGillis and Steve Lee

Difficulty Rotating the Key to the Lock Position

Foul Odor from Vehicle Interior There may be a foul odor in the interior of some 2012 Silverado and Sierra Extended Cab models. This condition affects ONLY the extended cab models built at Fort Wayne Assembly (RPO FWI) between 1/27/12 and 3/15/12.

On a 2010-2012 LaCrosse (not equipped with Keyless Start, RPO BTM), it may be difficult to turn the key to the Lock/Off position if the key is rotated slowly. If the key is rotated from the Run/On position to the Lock position quickly, the condition is not noticed.

This odor may be coming from the rear door leading edge seal.

TIP: Other electrical functions on the vehicle also may be inoperative when the key is in the accessory position, such as the radio, power windows, etc.

To confirm the odor is coming from the seals, remove both rear door seals and Rear door leading edge seal place them inside a plastic trash bag. Keep them sealed in the bag for several hours and then open the bag and confirm the odor. If the odor is still present, replace the door seals.

Voltage dropping out on circuit 143 when the key is in the Accessory position may cause this Location of fuse F24DA condition. Verify that the F24DA fuse is not open. This fuse is located in the X51A instrument panel fuse block position 22.

Thanks to Jim Will

Thanks to Chris Hightower

Condensation in Tail Lights or Water in Trunk The trunk lining may be wet or there may be water in the spare tire well, or there may be condensation in the tail lights, on some 2013 Malibus. These conditions may be caused by a mispositioned pressure relief valve or trunk lid liner, an open area in the trunk seam sealer, or a leaking wire harness retainer. Check that both pressure relief valves are properly installed in their openings. They should be snapped in from the outside. Check the seam all around the trunk opening and/or tail lamp pocket for skips in the sealer. Reposition the pressure relief valve or repair the seam sealer as needed.

On a 2012 Verano or 2013 Malibu, the driver and passenger temperatures settings may be displayed in Celsius or the outside ambient temperature may be missing from the radio/HVAC display. The outside ambient temperature sensor is disconnected or the wiring has a fault. Condensation in the tail lights

In addition, check that the felt deck lid liner is not oversized and laying on the trunk opening seal when the trunk lid is closed. Also check all wire harness retaining clips for signs of water intrusion. Clear any tail light condensation by running the vehicle with the parking lamps on. Thanks to Christopher Crumb

HVAC Temperature Display

Connect the vehicle to the GDS 2 scan tool and check the instrument panel cluster for DTC B0158 (Outside Air Temperature Display Malfunction). Also check the connection at the outside ambient temperature sensor. If no conditions are found, check the integrity of c ircuits 61 and 636 from the sensor to the instrument panel cluster. Thanks to Christopher Crumb

Check that the deck lid liner is not interfering with the trunk opening seal. 4

June 2012

Tire Sidewall Irregularities

Emissions 2 Fuse Open

Slight sidewall indentations are a common characteristic of radial tire construction. These indentations are more noticeable on larger size tires having a larger side wall height, including the following models: 2007-2012 Escalade, Escalade ESV, Escalade EXT, Avalanche, Silverado, Suburban, Tahoe, Sierra, Yukon, Yukon Denali, Yukon XL, and Yukon Denali XL.

If the Service Engine Soon light is On and an Emissions 2 (EMIS 2) fuse is open on 2012 Impala models built prior to February 15, 2012, check the metal wiring harness clip located just above the alternator. A number of DTCs (P2199, P11C2, P0693, P0691, P0178, P0161, P0141, P0102, P0097, P0056, P0036, P2228, P1258 and P0113) also will be set.

Radial tire body construction includes individual cords that run parallel to each other from bead to bead (down the sidewall, across the tread and up the other sidewall). These cords will overlap at points on the circumference of the tire. When the tire is mounted and inflated, it is free to naturally expand. The overlapped areas may create slight indentations, undulations, or protrusions since the stretching capacity of the overlapped area is slightly different than the rest of tire sidewall area.

Inspect the metal wiring harness clip located above the alternator.

Once the metal clip is opened, damage to the conduit may be evident. It may be necessary to open the conduit to inspect the circuits.

These irregularities Examples of tires with a sidewall indentation are a visual condition that will not affect durability, reliability or performance of the tires. Tire replacement to address this condition is not recommended; the replacement tires will likely have the same or similar condition.

Damaged wiring harness

TIP: Indentations are not to be confused with sidewall bulges. An outward sidewall bulge indicates spread or broken cords. Tires with a (outward) sidewall bulge should be replaced.

Repair the wiring and conduit. Modify the clip so it holds the harness in place but will not pierce the harness. It may be necessary to remove all traces of the tab that pierces the harness in order to prevent future damage.

Thanks to Scott Fibranz

Thanks to David Eplin

Corrosion Protection of Metal Panels When a GM-approved or aftermarket accessory is installed on a vehicle, where drilling holes into metal body panels or supports on the vehicle is required, it’s critical to maintain proper corrosion protection. Any time a metal surface is disturbed, such as by drilling a hole for a fastener, the corrosion resistance of that panel is compromised. GM has determined that the best way to protect the fastener-to-panel mounting holes from future corrosion is to use GM Vehicle Care Super Lube® with PTFE (PolytetrafluoroethylJune 2012

ene). This is the only product recommended by GM and is required by GM for the corrosion protection of metal panels where fasteners will be added to metal panels. When installing accessories, apply Super Lube to any hole and fastener before installing the fastener into the drilled attaching hole or inside the metal panel. Refer to Bulletin #03-00-89-008 for more information. Thanks to Keith Borowy 5

Use GM Super Lube to help ensure metal panel corrosion protection.

Memory Seats Lose the Stored Position On some 2010-2012 LaCrosse (with memory seat, RPO A45), 2010-2012 SRX (with memory driver convenience package, RPO AAB), 2010-2012 Equinox LTZ, and 2010-2012 Terrain SLT m odels, the memory seat may not return to the stored position when recalling it from the exit position, or it may lose the memory settings.

Move the seat to the preferred customer driving position. Visually determine the seat location by using a focal reference point or measurement tool.

TIP: Generally, the condition is noticed after multiple operations, making the condition perceived as intermittent.

Turn the ignition to Off to save the current seat position as the memory position for the current key fob. If the driver’s door is already open, the seat will move to the Easy Exit position. If the driver’s door is closed, open it to activate the Easy Exit feature.

First, verify the Memory Recall feature is being used correctly. Refer to the current version of #PIT4913 (Memory Seat Recall Inoperative from Key Fob) before proceeding with the following steps.

While leaving the driver’s door open, cycle the seat between the key fob memory position by pressing the unlock button on the key fob and the Easy Exit position by turning the ignition to Run and then to Off.

Unlock the vehicle with the key fob button and turn the ignition to the Run position.

Perform this test up to 10 times. End at the same stored seat driving position. If

Multiple Communication Codes

2. Check G105 under the battery tray for weld slag or paint on the grounding surface of the stud or nut. Remove the battery tray to inspect the grounds. G105 is directly under the battery tray, left of the Underhood Bussed Electrical Center (UBEC) on the frame rail.

TIP: For the Equinox LTZ and Terrain SLT models only, in TIS2Web, after selecting MSM from the Module List, the Vehicle Options drop-down list will come up. Select Heated Seats (+KA1). For all other models, select the appropriate options listed using the RPO list. Under the Calibrations Tab, use the current TIS2Web Calibration identified as “New software to address customer complaints related to drifting memory position or loses memory position.” Thanks to Ernest Haller

Water/Dust through Openings under the Bed Rails

If a 2012 Sonic exhibits a no crank or no start condition and multiple communication DTCs are set in history or communication with certain modules is not possible, inspect the following areas: 1. Inspect for a loose ground connection at G104 and improperly crimped wires. The G104 location is incorrect in the Service Information for US/ Canada Sonic but is correct in the Service Information for Global Sonic. A correction is being made.

the seat position appears to have moved forward or rearward in the vehicle (in some cases up to 1/2 inch), new software is available for the Memory Seat Module (MSM).

2007-2012 Silverado or Sierra pickups may have water or dust appearing from the openings under the bed rails near the stake pockets. While the openings on the new Silverado and Sierra are more visible, the Classic Silverado and Sierra had similar openings around the stake pockets. The new design has Location of opening near stake pocket equivalent performance for dust and moisture intrusion as compared with the previous design. The pickup box is not designed to be sealed completely from dust or moisture intrusion.

G104 location

Because the openings are design intent and are required for the unique forming process of the new pickup box side inner stamping, no warranty repairs should be made. However, these holes may be covered with many different types of materials. Several different companies, for example, ACI Agri-Cover, Inc. (http://shop. agricover.com/product/totalbedseal), offer accessories for c ustomer purchase, which helps keep rain, snow, and dust out of the truck bed.

G105 location

Thanks to Jim Will

3. Check power feed circuit 5290 from the UBEC to the ignition coil. In some cases, an internal open in the UBEC may be found. Thanks to Bryan Brunner

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June 2012

Inoperative Instrument Panel Cluster GM TechLink is published for all GM retail technicians and service consultants to provide timely information to help increase know ledge about GM products and improve the performance of the service department. Publisher:

Diana Sancya GM Customer Care and Aftersales / [email protected] Lisa G. Scott GM Customer Care and Aftersales / [email protected] Technical Editor:

Mark Spencer / [email protected] Production Manager:

Marie Meredith Desktop Publishing:

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

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1-248-729-4704

*

TechLink PO Box 500 Troy, MI 48007-0500

GM TechLink on the Web:

If these conditions are found, check fuse F26DA in the instrument panel fuse block for a spread terminal and a damaged fuse. Upon inspection, if the terminal is spread, use a suitable tool to close the gap in the terminal and then replace the fuse. Thanks to Bryan Brunner

Editor:

Write to:

On some 2012 Sonics, the instrument panel cluster may be intermittently inoperative with only the Check Engine light illuminated or the cluster backlighting may flash on/off intermittently. DTC U0155 (Lost Communication with Instrument Cluster) may be set.

GM GlobalConnect

:

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© 2012 General Motors All rights reserved.

June 2012

Fuse F26DA

Turn Signals Flash Faster Than Normal The turn signals may flash faster than normal on some 2012 Acadia models. The condition may not be able to be duplicated and may affect the left or right turn signals.

inspect the front turn signals for burned out bulbs. Replace any burned out bulb(s).

The Body Control Module (BCM) monitors the current draw from the turn signals. If the current draw is out of range, it will cause the turn signals to flash faster than normal. The current draw can be out of range if there is an issue with the bulbs or with the circuit board in the rear lamp assembly.

If the lamps do illuminate but are flashing fast, replace the rear lamp assembly.

Inspect the turn signal operation. If the turn signals flash faster than normal,

Inspect the rear lamp operation. If they do not illuminate, test the circuit for an open.

If the condition cannot be duplicated, apply and hold the brakes for at least five minutes. Inspect the turn signal operation once again. If the turn signals flash faster than normal, replace the rear lamp assembly. Thanks to James Miller

Automatic Climate Control Blows Cold Air before Engine Coolant is Warm On some 2007-2011 Silverado and Sierra models equipped with the 6.6L diesel engine (RPO LMM) and automatic climate control (RPO CJ2), the Auto HVAC blower will blow cold air at high speed before the engine coolant temperature is warm in cold weather. The HVAC blower will be ramped up to approximately 90% within one or two minutes after the engine is running. This condition only occurs if the blower is set to the Auto mode. The blower speed can still be adjusted to any speed by using the manual fan speed control.

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TIP: During normal Auto HVAC blower operation, the blower will start to blow at a low speed when the engine coolant temperature reaches 40° F (4° C). As the engine coolant temperature increases, the blower speed also will increase. Once the engine temperature is at 136° F (58° C), the blower could be commanded to high speed. Do not replace any parts for this condition. Reprogram the HVAC Control Head with the latest calibration available in TIS2Web. Thanks to James Will

Car Issues – Fix It Right the First Time

Model Year(s)

Vehicle Line(s)/Condition

2003-2013

All Lines — Corrosion protection for metal panels with dealer-installed accessories fastened by drilled holes

Apply corrosion protection to drilled holes with exposed metal

Not apply corrosion protection to drilled holes with exposed metal

03-00-89-008F

2011-2012

CTS Coupe, CTS-V Coupe, CTS Coupe — Memory seat/mirrors switch buttons intermittently stick

Obtain memory switch bezel from WPC when needed for sticking switch

Replace entire door trim panel

PI0468A

2012

Impala — Rattle noise from front of vehicle on bumpy roads

Verify the hood latch and bumpers are not source of noise

Replace suspension components

PI0723

2012

Impala — MIL On, various DTCs set, including C0035, P0641 and/or P06A3; IPC inoperative, display fuse blown

Inspect for harness routing and potential short to ground

Overlook harness routing

PI0631B

2011-2012

Cruze, Sonic — Engine rattle/knock noise, loose or broken front crankshaft pulley bolt and/or flywheel bolts

Check over speed data with GDS to help determine reason for failure

Assume it is a product or material defect without checking for likely cause

PI0715

2011-2012

Cruze, Sonic — Coolant leak at thermostat housing to cylinder head

Replace only the seals

Replace the thermostat housing or the thermostat for a rolled seal

PI0721

2006-2013

All Vehicles — Information on inadvertent Steering Wheel Control button press causing radio anomalies

Ensure it was not caused by an inadvertent press of the steering wheel controls

Replace the radio

08-08-44-028A

2012-2013

Equinox, LaCrosse, Malibu, Regal, Terrain, Verano, Volt — Intermittent Pandora operation

Ensure that Pandora is not being disabled by a task manager or timer

Replace the radio

PI0719

2012-2013

Equinox, LaCrosse, Malibu, Regal, Terrain, Verano, Volt — Multiple song listings when using USB input

Restore factory defaults or perform the USB update as directed

Replace the radio

PI0720

2012

Camaro, CTS, CTS-V, CTS Coupe, CTS-V Coupe, CTS Sport Wagon, CTS-V Sport Wagon, Equinox, Sonic, Terrain — MIL illuminated, DTC P0442 or P0455 set

Smoke test system for leaks. If no leaks, replace evaporative emission canister vent solenoid valve

Replace the fuel tank evaporative emission canister or lines

PI0697A

2012

Camaro — Glovebox door not latching properly, loose on left side

Replace the glove box door bumpers

Replace the glove box door. It is not bent or warped

PI0698

2012

Cruze — HVAC blowing cold air when set to auto ac mode and set to warm temperature

Reprogram HVAC control module

Replace HVAC control module or any other HVAC components

PI0714

2011-2012

Cruze — Supplemental repair required for HVAC condenser inoperative/replacement due to stone/ foreign material impact

Install condenser screen when replacing condenser

Install new condenser without screen

PI0461B

Do This

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Don’t Do This

Reference Information/Bulletin

June 2012

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

Vehicle Line(s)/Condition

Do This

Don’t Do This

Reference Information/Bulletin

20102012

Terrain, Equinox — Windshield defroster operation

Check for new HVAC system control module service calibration reprogramming

Replace the HVAC control module

PI0701A

2012

Sierra, Silverado, Canyon, Colorado, Express Savana — MIL - Check Engine light On, DTC P0741 is set

Replace the transmission internal wiring harness

Replace the torque converter

PIP5009C

2012

Silverado, Sierra, Extended Cab Only — Foul odor from interior of vehicle

Verify whether odor is originating from seals using procedure as outlined

Fail to verify source of odor using specified procedure

PIT5158

20072012

Silverado, Sierra — General water leak diagnostic guide

Verify source of water leak and perform repairs following steps as outlined

Fail to follow outlined process

09-08-57-002C

2012

Sierra, Silverado — Trailer hitch pins too short or do not fit

Verify the hitch pin can be installed during PDI or prior to customer delivery of the truck

Fail to verify the hitch pin can be installed

PI0713

2012

Avalanche, Escalade, Escalade ESV, Escalade EXT, Sierra, Silverado, Suburban, Tahoe, Yukon, Yukon Denali, Yukon XL, Yukon XL Denali — Poor voice quality during Bluetooth Call or OnStar personal call

Reprogram the VCIM with updated software calibration

Replace the VCIM or perform ONSU programming

PI0688B

20072012

Escalade, Escalade ESV, Suburban, Tahoe, Yukon, Yukon Denali, Yukon XL, Yukon XL Denali — Third row seat(s) difficult to remove, install, release, tumble, fold, squeak noise

Verify seat operation following steps as described, follow repairs outlined to correct concerns

Fail to verify seat operation following steps prior to repair

10-08-50-004A

10212.06D Emerging Issues

Service Know-How

June 14, 2012

To view Emerging Issues seminars: Log in to www.gmtraining.com, select Service Know-How/ TECHAssist from the menu, select Emerging Issues, and then Searchable Streaming Video to choose the current Emerging Issues seminar or past programs.

Customer Care and Aftersales

June 2012

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