Global Diagnostic System Update

Transcription

1 October 2009 Volume 11, No.10 Global Diagnostic System Update With the recent arrivals of the 2010 Camaro, LaCrosse, Equinox, Terrain and SRX in dealerships, technicians have had their first experiences in diagnosing GM Global Architecture (Global A) vehicles using the new GM Global Diagnostic System (GDS). These vehicles do not permit Tech 2 communication for diagnostic purposes. GDS is a PC-based diagnostic application that works with simple menu-driven commands using a standard Windows interface on a Techline service PC. It takes advantage of the display and processing power of the PC to provide technicians with the ability to work with vehicle data in ways unavailable on the Tech 2. Technicians will be able to view much more data from many different perspectives along with an improved snapshot feature. continued on page 2 Techline News MDI Repairs As the initial deployment of Multiple Diagnostic Interface (MDI) tools reaches its two year anniversary, these units will fall out of warranty coverage. Dealerships needing assistance in diagnosing an MDI unit and requesting service will still need to call the Techline Customer Support Center. If it is determined that the MDI will need to be sent in for repairs, there are two possible repair processes depending on the repairs that are needed. To start the process, the MDI is sent to the repair center. The repair center will contact the dealership within two days of receiving the MDI to confirm one of the following repair processes: If the MDI can be repaired, the charge will be $129 (USD) plus shipping. If the MDI needs to be replaced with a refurbished unit, the charge will be $329 (USD) plus shipping. After confirming the repair process, the unit will be sent back to the dealership within two business days. Both processes include a 90 day service warranty. Thanks to Matt Singer Contents Global Diagnostic System Update MDI Repairs AF40-6 Transmission Fluid Inline 4/5/6-Cylinder Engine Rattle Active Noise Cancellation 2010 Equinox/Terrain Remote Operation of the Power Windows...3 Camaro Rally Stripes Installation Videos....4 Range Selector Lever Cable Replacement...4 Door Locks Inoperative Blocked Shift or Difficulty Shifting Manual Transmission SRX Rear Safety Belt Reminder Functionality.5 Power Window Inoperative After Start-Up...5 D-Ring Slider Installation OnStar Antenna Test Tool Driveline Noises in 4WD SIR Load Tool Discontinuation Sun Visor Vanity Mirror Door Replacement..7 New Delivery Method for Emerging Issues...7 Fix It Right the First Time Service Know-How Service and Parts Operations October

2 Global Diagnostic System Update continued from page 1 Several additional Global A vehicles will be introduced shortly that will also use GDS, including the Chevrolet Cruze, Buick Regal, Saab 9-5 and Saab 9-4X. The Multiple Diagnostic Interface (MDI) combined with GDS will be the diagnostic tool used on Global A vehicles, while other vehicles will continue to use the Tech 2, making both scan tools required diagnostic tools in the dealership. TIP: When the Service Information instructs technicians to use a scan tool during diagnostic procedures, it does not reference a specific tool, such as the MDI/GDS or Tech 2. Technicians need to determine the proper scan tool to use based on the vehicle being serviced. Global Electrical System The Global A models using GDS are truly globally-designed vehicles. They are built around the world for several different markets. This requires vehicle systems to meet the requirements of varying regulations in different markets, some of which can have an effect on the way vehicles are typically diagnosed and serviced half-way around the world. One recent issue experienced in dealerships may be a no start condition after swapping an ECM or other module from one Global A vehicle to another. The Global A system does not allow controller swaps between vehicles. This includes these modules: ECM, BCM, EBCM, SDM, ECC and IPC. If a module on a Global A vehicle is swapped out, it will result in a no start condition in both vehicles because the module security codes do not match. Using GDS In order to be ready to service the new 2010 Global A models, it s recommended that the GDS application be downloaded and installed before Global A vehicles start arriving at the dealership. GDS can be downloaded through TIS2Web by clicking on the GDS icon on the TIS2Web home page. The application must be loaded on each shop PC individually. Once installed, GDS can be launched from the PC desktop icon or from TIS2Web. Also verify your MDI is configured for your dealership's network and updated with the latest version of software. Updated MDI software is automatically downloaded to the PC through either SPS or GDS, but technicians need to update the MDI when prompted with the new software using the MDI Manager software application. In addition, since the MDI is now being used as a diagnostic tool, as well as SPS, it may be beneficial to reassess how many MDIs your service department will require. Additional units can be ordered through GM-TOOLS. In order to take full advantage of PCbased vehicle diagnostics, notebook and tablet computers will provide technicians more mobility and efficiency by being able to perform diagnostics on a road test as well as reducing the amount of time spent going back and forth between the vehicle and a desktop PC. If your dealership is looking into purchasing additional computers notebooks or desktops be sure to review the latest recommended PC specs. GDS Information and Training Further GDS specifications and user training is available online. Dealerships must ensure that their current IT infrastructure meets the GM specifications required for Techline applications. Updated specifications for efficiently running GDS are available at (In Canada, on GMGlobalConnect in the Service library under Tools and Processes and Equipment.) Recommended specifications for a mobile computing device (notebook or tablet PC) for use when performing diagnostic procedures on the road is available at (In Canada, on GMGlobalConnect in the Service library under Tools and Processes and Equipment.) GDS Familiarization training course W provides an overview of the use of the MDI and GDS for diagnostics. MDI Familiarization training course W covers the operation of the MDI. Thanks to Matt Singer AF40-6 Transmission Fluid The 2010 SRX features two available powertrains: the 3.0L DI V6 (RPO LF1) with the 6T70 Hydra-Matic transmission (RPO MH2, FWD; RPO MH4, AWD) and the recently introduced 2.8L turbo V6 (RPO LAU) with the Aisin AF40-6 transmission (RPO MXE). Vehicles with the turbo V6 and AF40-6 powertrain are AWD. The AF40-6 transmission uses a specific transmission fluid, referred to as AW 1. DEXRON -VI should NOT be used in the AF40-6 transmission. AW 1 transmission fluid is GM part number (US) or (Canada). Thanks to Rich Burrell Inline 4/5/6-Cylinder Engine Rattle This information applies to Rainier, TrailBlazer, Colorado, Envoy, Canyon, H3, Bravada, or 9-7x with an inline 4/5/6-cylinder engine (RPO Code L52, LK5, LL8, LLR, or LLV). Some vehicles may have an engine rattle that develops shortly after engine repairs that required crankshaft balancer removal and replacement. In some cases, the noise can be eliminated by retarding the CMP actuator with a Tech 2. The noise may be the result of the crankshaft gear rattling on the crankshaft pin if the crankshaft balancer bolt was not torqued to specification during recent repairs. If this rattle occurs for a long period of time, it could eventually lead to crankshaft timing sprocket or pin damage, which may cause an SES light due to DTCs P0016 or P0017 (DTC depends on model year) and no engine performance concerns. If a rattle noise is present with or without the SES light and DTC P0016 or P0017 and SI diagnosis does not isolate the cause, re-torque the crankshaft balancer bolt to specification following SI procedures and re-evaluate the noise. If tightening the bolt repairs the rattle noise but DTC P0016 or P0017 still sets, follow SI diagnosis and repair as necessary. If this does not isolate the cause of the DTC, follow SI procedures to remove the crankshaft timing sprocket and inspect the crankshaft alignment pin and the related groove of the sprocket for obvious wear. If obvious wear is present, replace the crankshaft timing sprocket and/or pin and re-evaluate the concern. Thanks to Jamie Parkhurst 2 October 2009

3 Active Noise Cancellation 2010 Equinox/Terrain Active Noise Cancellation, or ANC, (RPO VQN) is being introduced on 2010 Equinox and Terrain models equipped with the 2.4L SIDI 4-cylinder engine (RPO LAF). It works to reduce noticeable noise at certain vehicle speeds by creating sound waves at a precise frequency, resulting in improved quietness with less mass and better fuel economy than using additional sound-deadening insulation. The ANC system has four main components: ANC module Microphones (2) Audio amplifier Speakers ANC uses an RPM signal from the tachometer to determine the rotational speed in the engine along with in-vehicle microphones to monitor low-frequency engine drone. The microphones are connected to the audio system and pick up the sound/noise in the vehicle s cabin while the speakers produce the cancellation vibrations. The two microphones are centrally located in the headliner to detect noise in the vehicle caused by the engine. The processor analyzes the noise signal and outputs a cancellation signal audio tone based on positive coefficient and phase change to moderate the engine noise and make the vehicle seem quieter. The ANC module then sends an "anti-noise amplified signal to the speaker and subwoofer, which is mixed within the audio amplifier with the regular audio (CD/radio, etc). TIP: ANC does NOT cancel wind noise, road noise, or any engine noise above 2000 RPM. TIP: For optimal ANC performance, do not block the cargo area speaker. Commonly Misidentified Issues ANC is not working If a customer knows the vehicle has ANC, it may be a common misperception that ANC is not working because the engine still makes noise. The ANC module only cancels particular frequencies of noise caused by transmission lockup. It is meant to bring the engine noise back to an acceptable level, not create a noise-free environment, such as noise-cancelling headphones. The subwoofer is not working Vehicles equipped with the base-level audio system (RPO UW6) and ANC (RPO VQN) will have a subwoofer in the rear compartment. The subwoofer is necessary for ANC operation and is used only for ANC on vehicles equipped with the baselevel audio system. With UW6, no CD or radio audio output will come out of the subwoofer (strictly dedicated for ANC). Diagnostics/Service The ANC module has an internal microphone-check diagnostic mode. This can be used to check microphone connectivity. Please see the Service Information for diagnostic tone testing (Document ID# ) ANC Limiter Shutdown The ANC module has a self-protect mode where it will shut down if the cabin environment changes in a way where noise can no longer be canceled (i.e., odd combination ANC module of open windows, etc). An output limiter is part of the ANC programming, so it may shut down during an ignition cycle to prevent ANC overload. ANC will resume normal operation on the next ignition cycle. If this shutdown happens while a customer is driving, more engine noise than normal may be noticeable. ANC Labor Code The labor code associated with ANC repair/replace is R0150. The subwoofer that provides the cancellation vibrations is located in the rear cargo area. TIP: Keep in mind that ANC is part of the audio system and that the amplifier, radio, speakers and microphones all need to be working for ANC to function properly. For example, intermittent microphone connectivity will lead to unstable ANC operation. Thanks to Matthew Berg, David R. Baer, and Katul Patel Remote Operation of the Power Windows Some models of the 2010 LaCrosse, SRX, and Equinox built prior to June 26, 2009, may be equipped with remote operating door windows. This feature enables the vehicle s door windows to be opened from outside the vehicle using the Remote Keyless Entry transmitter. To open the windows using the transmitter, press and hold the transmitter s Unlock button for several seconds until all the windows open. This feature only opens all windows. There is no feature to close the windows using the transmitter. TIP: On 2010 Equinox models equipped with the remote operating door windows feature, the feature will be eliminated if the BCM is replaced or reprogrammed. It cannot be turned back on nor can a vehicle built on or after June 26, 2009, have this feature added. Thanks to Dino Poulos October

4 Camaro Rally Stripes Installation Videos Prior to installing the GM Accessory Rally Stripes Kit on the 2010 Camaro, it s important to review the three videos available through the GM GlobalConnect website. These videos provide several tips to ensure trouble-free application of the accessory stripes kit. To access the training videos from the GlobalConnect website, in the U.S., select: > Workbenches > Sales > Accessory Information Center (AIC) > From this website, select Support, and then Training. In Canada, the training videos may be accessed from the GlobalConnect website by selecting GM Accessories under the Brand section on the home page. There are installation instructions and three videos on how to install the stripes kit. TIP: (U.S. only) If the Accessory Information Center (AIC) tab under the Sales Workbench is not available, please contact your Dealer s Partner Security Coordinator (located in the Edit Profile tab) to set up access to the AIC tab. Thanks to Dennis Kosmowski Door Locks Inoperative 2010 LaCrosse, SRX, Camaro and Equinox owners may comment that the door lock actuators are inoperative intermittently. This condition may be caused by excessive use of the Remote Keyless Entry (RKE) transmitter Lock or Unlock button or the door Lock/Unlock switch. If either the RKE Lock or Unlock button or Lock/Unlock switch is pressed several times repeatedly within 45 seconds, the door lock actuators will temporarily become inoperative. This is a normal operating characteristic that is designed to prevent premature wear to the door lock actuators. To correct the temporarily inoperative state, it s necessary to wait up to 15 seconds (depending on the number of times the button or switch was pressed) without depressing the button or switch. This will allow the system to regain functionality. Thanks to Dino Poulos Range Selector Lever Cable Replacement When installing the range selector lever cable to the range shifter housing on the 2010 LaCrosse, ensure that the adjustable cable lock mechanism is properly seated. Although the mechanism may appear to be seated, it may not be fully locked in place. It may take additional force in order to properly seat the locking mechanism. It also may be necessary to use the aid of a tool to ensure that the mechanism is fully seated. Improperly seated locking mechanism Properly seated locking mechanism is flush with the top of the housing. The top portion of the locking mechanism should align flush with the top of the housing. If not properly seated, the cable may disconnect and not allow shifting. Thanks to Paul Lukasik Blocked Shift or Difficulty Shifting Manual Transmission The ION, VUE, Cobalt, G5 (Pursuit), and HHR equipped with a Getrag manual transmission (RPO M86 or MG3) may exhibit a hop-out or blocked shift of 1st, 3rd and 5th gears or difficulty shifting. The shift lever roll pin may back out and contact the shift cover during a shift event, which can cause an incomplete, blocked shift or difficulty shifting the transmission. Prior to any internal trans mission repairs, inspect the shift cover and lever to determine if the roll pin has backed out and is dragging on or contacting the Dislodged roll pin housing. If roll pin contact is evident, then the shifting difficulty may NOT be an internal transmission condition. If the shift cover shows witness marks from contact with the roll pin, replace the complete shift cover Properly seated roll pin assembly. Refer to the appropriate Service Information. Do not replace the transmission for this condition. If the roll pin is not dislodged, follow the appropriate diagnostics in the Service Information. Thanks to Chuck Krepp 4 October 2009

5 SRX Rear Safety Belt Reminder Functionality The 2010 SRX is equipped with a standard Rear Safety Belt Reminder (RSBR) for all rear seat occupants. Rear seat occupancy is determined based on the safety belt switches occupant sensing mats are not used and rear seat occupants are not detected until buckled. Therefore, if an occupant never buckles, the system will never detect the occupant s presence. Buckled Safety Belt If an occupant does buckle, the occupant is detected and the corresponding RSBR indicator on the instrument cluster will illuminate green for 35 seconds, and then turn off. Once a rear seat occupant is detected, the system will assume that occupant is present for the duration of the ignition cycle or until a rear door is opened. If an ignition cycle occurs or a rear door is opened, the RSBR indicators will reset and assume no rear occupants are there until a safety belt buckle is latched again. The green Rear Safety Belt Reminder indicates an occupant is buckled in the middle rear seat position. Unbuckled Safety Belt If the rear seat occupant unbuckles during the same ignition cycle and the speed exceeds 6.5 mph (10kph), the RSBR indicator will illuminate red in full screen mode on the instrument cluster and the RSBR chime will sound. The chime will stop after three seconds, but the RSBR indicator will remain illuminated until the rear seat occupant buckles or the ignition cycle ends. If the occupant rebuckles, the indicator will illuminate green for 35 seconds. The red Rear Safety Belt Reminder indicates an occupant is unbuckled in the left rear seat position. Safety belt latch plates and buckles are keyed, so they cannot be crossed. For example, the center plate will not latch into either of the side safety belt buckles. RSBR Service There are no DTCs associated with the RSBR system. The system can be diagnosed using the following symptom diagnostic procedure: Safety Belt Indicator Circuit Malfunction Rear. Thanks to Mike Fitzgerald and Carmen Richmond Power Window Inoperative After Start-Up Owners of a 2009 HHR, 2008 HHR SS, 2009 Traverse (without AXC or AXE), Silverado or Sierra (without DL3 and/or AN3), or Acadia or OUTLOOK (without AXC or AXE) may comment that if the driver s power window switch is pressed shortly before cranking the engine, the driver s power window may be inoperative for a short time after the engine starts. The driver's power window switch has "stuck switch software" built into the switch. This software disables the switch in the event of a switch sticking in a position other than the neutral (released) position. If the power window switch is pressed shortly before cranking the engine, the software may recognize it as a stuck switch and disable the switch. The power window switch will reset automatically once the switch is in the neutral position for two seconds. If the switch is released and pressed again before two seconds has elapsed, it will remain inoperative until the switch is released for a full two seconds. Do not replace the power window switch for this condition. Thanks to Steve Love D-Ring Slider Installation The 2010 SRX features four D-Ring sliders that move along rails on both sides of the cargo management area. These can be used as tie-downs when storing cargo. The four D-ring attachments are located in a box in the loose shipped parts bag in the rear of the vehicle. To install the D-Ring slider, insert it into the channel located in the middle of each rail. The loop of the D-Ring slider must be facing inward toward the storage area and the ring must be in the up position for proper use. Insert the D-Ring slider (A) into the channel in the middle of the rail (B). Push the button to move the D-Ring slider. The rings can be locked into various positions along the rail. Thanks to Dino Poulos Face the D-Ring slider inward October

6 OnStar Antenna Test Tool An OnStar no connect issue is when the vehicle cannot reach the OnStar Call Center when the blue OnStar button is pressed. The problem can be caused by the antenna, the OnStar module, or the cell phone network. With current diagnostic procedures, technicians do not have a method to isolate an OnStar no connect issue to a faulty component the first time. Service Information instructions state to replace the antenna first, and if that does not fix the problem, replace the module. Most no connect issues are related to the module or the cell phone network, so GM is experiencing high warranty levels on antennas with no trouble found. A new essential tool, the OnStar Antenna Test Tool EL recently shipped to dealers, is now available that will qualify the antenna and module. The EL tool consists of EL antenna and EL harness adapter. Use the harness adapter with the white mini-uhf connector to mate the OnStar Antenna Test Tool to OnStar modules Generation 7 and prior. Use the purple FAKRA connector for all generations after TIP: The following verification procedure requires the vehicle to be outside with an unobstructed view of the southern sky to ensure proper view of satellites and cell towers. The OnStar Antenna Test Tool should be used to determine if the OnStar Antenna Test Tool EL problem is related to the antenna or the module when the vehicle is unable to connect to the OnStar Call Center. The procedure involves connecting the OnStar test antenna directly to the OnStar module and trying to connect to the OnStar Call Center. If still not able to connect, the problem is either with the module or the cell phone network. Call the Technical Assistance Center to order a module. If a call is able to connect to the OnStar Call Center using the OnStar test antenna, follow diagnostics for the antenna and coax cables to further isolate the problem. OnStar No Connect Malfunction Procedure (without Navigation) 1. Ignition OFF, disconnect the coax cable connector at the K73 telematics communication interface control (OnStar) module. 2. Connect the EL to the K73 telematics communication interface control module; place the test antenna on the roof of the vehicle. 3. Ignition ON, contact the OnStar Call Center by pressing the blue OnStar button. A call center consultant should answer the call, verifying the vehicle OnStar system is functioning. If the OnStar system does not function, replace the K73 telematics communication interface module. If the OnStar system does function, perform the following antenna/coaxial cable diagnostics. 4. Ignition OFF, perform the coax cable test on the coax cable, refer to Component Testing in SI. The coax cable should pass the test. If the coax cable does not pass the test, replace the coax cable. If all coax cable circuit testing is normal, replace the T4 cellular phone and navigation antenna. Thanks to Al Gallagher, Tom Mager and Howard Owens Driveline Noises in 4WD 2009 and prior Chevrolet and GMC light-duty trucks and SUVs equipped with 4WD and 2009 and prior HUMMER H2 and H3 models may exhibit a groan, growl, or moan noise when operating the vehicle in 4WD Lock. The noise may be due to a vibration that is heard or felt as a result of the front axle being excited to resonance at its natural frequency. This is a combination of the transfer case chain link frequency, engine firing frequency, tire circumference variation, and various other tolerances built into the 4WD system. TIP: A groan, growl or moan noise on de celeration while in 4WD Lock is also the result of loading the transfer case chain, which is an operating characteristic. This is just one example of a transfer case link frequency as noted above. TIP: On certain models, such as 3/4 -and 1-ton vehicles, tire pressures can vary from front to rear based on the manufacturer's specifications. For example, the tire pressures on a 2003 Suburban K2500 are front: 50 PSI (345 kpa), rear: 80 PSI (550 kpa). The difference in tire pressures affects the rolling tire circumference from front to rear, which can increase driveline noise while in 4WD. For test purposes, drop the tire pressure in the rear to match the front. If the noise is reduced or eliminated, this confirms the difference in tire pressures from front to rear can affect the noise when operated in 4WD. Set the rear tire pressure back to the manufacturer's specification. For vehicles with the same tire pressures front to rear, swap tires from an identically built vehicle that does not seem to exhibit the concern and re-evaluate both vehicles. No repairs are recommended for this condition. For more information regarding driveline noises while in 4WD, refer to the latest version of bulletin # F. Thanks to Chuck Krepp SIR Load Tool Discontinuation Beginning with the 2010 Equinox, Camaro, LaCrosse, Terrain and SRX, a SIR load tool will no longer be used for the diagnosis of SIR deployment loop DTCs. The updated diagnostic process will use a fused jumper (without resistor), created by the technician, instead of a SIR load tool. Refer to the appropriate Service Information for updated service procedures. Thanks to Carmen Richmond 6 October 2009

7 GM TechLink is a monthly magazine for all GM retail technicians and service consultants providing timely information to help increase know - ledge about GM products and improve the performance of the service department. Publisher: R. M. (Bob) Savo GM Service and Parts Operations / Bob.Savo@GM.com Editor: Lisa G. Scott GM Service and Parts Operations / Lisa.G.Scott@GM.com Technical Editor: Mark Spencer / mspencer@gpworldwide.com Production Manager: Marie Meredith Desktop Publishing: 5by5 Design LLC / dkelly@5by5dzign.com FAX number: Write to: * TechLink PO Box 500 Troy, MI GM TechLink on the Web: : GM GlobalConnect General Motors service tips are intended for use by professional technicians, not a do-it-yourselfer. T hey are written to inform those technicians of conditions that may occur on some vehicles, or to provide information 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 bulletin 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 2009 General Motors Company All rights reserved. Sun Visor Vanity Mirror Door Replacement If the sun visor/sunshade vanity mirror door on a STS breaks and separates from the mirror frame, the vanity mirror door may be replaced separately. It is not necessary to pull the sun visor/sunshade or harness from the headliner or replace the sun visor/sunshade assembly. This condition may be caused by an area of porosity in the molded material of the vanity mirror door that may weaken over time, causing one of the side retaining pins of the vanity mirror door to break off. Refer to service bulletin # for specific repair, part, and warranty information. Part Numbers Sunshade Mirror Door (Gray) Sunshade Mirror Door (Cashmere) Thanks to Doug Daugherty New Delivery Method for Emerging Issues Beginning in October, the monthly Emerging Issues (EI) seminar in the U.S. will go directly to as a streaming video. It will no longer be broadcast live due to the discontinuation of the GM Interactive Distance Learning (IDL) satellite system. The majority of Emerging Issues viewers already watch the program as a streaming video, so this is not expected to be a big change. The goal of Emerging Issues has always been to keep technicians and service consultants updated on the latest service issues and to provide a heads up as new issues are identified. This goal hasn t changed, only the delivery method. Emerging Issues will follow the same schedule as in the past. New programs will be available on the website by the second Thursday of every month. Emerging Issues on To find Emerging Issues seminars on click Service Know- How/TECHAssist in the menu on the left. Next, select Emerging Issues, and then Searchable Streaming Video. Scroll down the list or use the search engine to find the current Emerging Issues seminar or any of the programs from prior months. You can also search the list for a particular topic, and search within each program for a keyword. Clicking a result of the keyword search will take you right to that portion of the video. To get credit for watching Emerging Issues, take the test on the website by clicking Testing, select Service Technical, and then Know-How Seminars. Send to EI@raytheon.com If a retaining pin breaks, replace only the vanity mirror door. A new address has been created for Emerging Issues. As always, viewers are encouraged to send in their questions, comments and suggestions. We d like to use to create a dialogue between Emerging Issues and viewers. If you are interested in participating, send an to EI@raytheon.com. Advance notice of upcoming guests and topics will be sent out so viewers can send in questions before the show is taped. If you can, attach a picture of yourself, or your dealership, just in case your question is used in the program. As always, if you have a question after watching Emerging Issues, us your question and we ll do our best to get an answer as quickly as possible. Thanks to Jim Trudeau and Rick Hill October

8 Car Issues Fix It Right the First Time Model Year(s) Vehicle Line(s) / Condition Do This Don t Do This Reference Information / Bulletin DTS, Lucerne Outside rearview mirrormounted turn signal indicator and side blind zone alert lamps inoperative Inspect the four-way electrical connectors. Do not replace the outside rearview mirror assembly LaCrosse, Montana, RELAY, Terraza, Uplander Intermittent harsh upshifts or downshifts, DTC P1811 Reprogram the TCM Do not perform any transmission repairs A SRX, STS, XLR Check engine light on, DTC P1101, P0068, P0171, P0174 Download updated PCM calibration Do not replace sensors or the throttle body A Cobalt, G5 (Pursuit) Noise from rear suspension Replace the rear suspension insulators with new part Do not use the old part C AURA, G6, Malibu/Maxx Steering column tilt wheel release lever inoperative/broken Replace the release lever and/or release lever retainer Do not replace the steering column Aveo, G3 Rattle noise in front of vehicle Adjust the yoke on the rack and pinion steering gear Do not replace the steering gear HHR Driver front side door power lock intermittent operation Revise the front side door trim panel Do not replace the door trim panel Cobalt, CTS, Equinox, G5 (Pursuit), HHR, Solstice Ignition key binds in cylinder Replace the ignition cylinder with new part Do not grease/lubricate or replace with the old part A Envoy, TrailBlazer Rumbling noise in passenger compartment while driving at highway speeds 2010 Camaro Moisture from center HVAC vent when A/C is on, floor carpet wet Reprogram the TCM Do not replace any parts B Realign the A/C drain tube Do not repair the HVAC module A 2010 Camaro Loose windshield side garnish molding Install revised retaining clip Do not replace the garnish molding A 2010 Camaro Scratched radio display screen Polish the display screen Do not replace the radio display A G8 Carpet wet when A/C is on Inspect the evaporator drain hose rubber grommet Do not replace parts until the evaporator drain is inspected CTS, CTS-V Removal of front seat adjuster track finish covers Use the proper removal procedure to avoid damaging the covers. Do not use improper removal techniques or damage may occur All Vehicles Service consultant procedure for TPM system message, light Check the tire pressure prior to any diagnosis or repair Do not repair or relearn the TPM system for low tire pressure LaCrosse, SRX, Camaro, Equinox Difficulty with tire pressure indicator sensor learn process Reprogram the BCM Do not replace a TPMS or BCM PIC5174D Truck Issues Fix It Right the First Time Model Year(s) Vehicle Line(s) / Condition Do This Don t Do This Reference Information / Bulletin All Vehicles with 5.3L, 5.7L, 6.0L, 6.2L, or 7.0L engine Engine oil leak Use RTV to repair engine block porosity Do not replace the engine block G Acadia, Enclave, OUTLOOK, Traverse Second row seat inoperative Replace the seat recliner pin Do not replace the entire seat frame assembly Service Know-How D Emerging Issues October 8, 2009 For Emerging Issues seminars: Log in to 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. 8 October 2009