Current GM vehicles are painted with a two component urethane clear coat. This finish cures during the manufacturing process.
If a customer wants to wax their car, they can do so at time of delivery.
TIP:Â See the owner manual for recommended types of non-abrasive wax.
TIP:Â Refinish paint is a different story. Most suppliers recommend a 30 day wait before waxing.
- Thanks to Dino Poulos and Brian Dotterer
In early June, GMSO completed the migration of TIS 2 Web SPS to all U.S. dealers. Today, dealers will use TIS 2 Web as the primary method to update the Tech 2 and to perform vehicle reprogramming (SPS).
Now, when launching TIS from your Techline PC, you will find a TIS 2 Web icon that will direct you to the TIS 2 Web central website. Using TIS 2 Web provides access to the most current vehicle data and calibrations, significantly reducing instances of missing VINs or VCI requests.Â
Additionally, recent enhancements have improved calibration download times, making TIS 2 Web considerably easier to use. The final phases of the transition to TIS 2 Web, adding Tech 2 View and SnapShot are scheduled for release by August 2006.
TIS GMACCESS Now the Backup
Until the final phases of the transition to TIS 2 Web are completed, TIS GMACCESS will be maintained as a backup in the event TIS 2 Web is unavailable.
Accessing TIS 2 Web
For security purposes, TIS 2 Web does not allow concurrent logons with the same ID and password. So, each technician is required to have their own DealerWorld ID and password. The dealership's partner security coordinator (PSC) can provide these user credentials as well as update the technician's user profile to include all the service applications.
If there are any questions regarding TIS 2 Web, contact Techline Customer Support Center (TCSC) at 888.337.1010 or your regional Techline Consultant.
- Thanks to Mike Waszczenko
On the 2005-06 Chevrolet Cobalt and Pontiac Pursuit (Canada only), some customers may comment that the fabric on the door trim is pulling away from the pull cup. This can affect vehicles both with and without power windows/locks.
The bezel on the pull cup may not be wide enough to account for manufacturing variations in the trim panel.
When this condition occurs, depending on application, either replace the pull cup with a new design cup that has a wider bezel, or install a beauty ring underneath the pull cup. Refer to revised bulletin 05-08-64-036B for details.
IMPORTANT:Â Do not replace the door trim.
TIP:Â The pull cup is available in colors to coordinate with the vehicle trim.
TIP:Â The beauty ring is available in several versions -- for front and rear doors, for sedans and coupes, with manual or power windows. Manual window applications are color coordinated.
TIP:Â These parts are packaged in a quantity of one per pack.
- Thanks to Steve Oakley
This information applies to the 2007 Cadillac Escalade, Chevrolet Tahoe and Suburban, and GMC Yukon and Denali.
Some customers may experience a no-crank condition at times. This concern may be more likely to appear in colder weather. During diagnosis, there may be no communication with any module on the GM High Speed LAN, or multiple GM High Speed LAN loss-of-communication codes.
The GM High Speed LAN terminating resistor may be shorting out and pulling down the GM High Speed LAN data line. Remove the terminating resistor and swap it with one from a known good vehicle and re-test the vehicle. If the condition goes away, replace the terminating resistor.
TIP:Â To find intermittent concerns with the terminating resistor, place it in a freezer for 1 hour. Then check the resistance of the terminating resistor. It should be approximately 121 ohms.
- Thanks to Paul Radzwilowicz
The accessory power outlet (APO) on some Cadillac CTS cars may be set to remain "hot" at all times, or it may be set to remain on after the ignition is turned off, then shuts off after 10 minutes.
Some owners may prefer the always hot setting, in order to charge cell phones or other accessories when the vehicle is parked. Other owners may prefer the shut off feature.
There have been running changes to the CTS, and the owner manual has not clearly reflected some of these changes. (The owner manual was changed for MY 2006.) If an owner needs help in understanding the APO operation, here is a summary of the facts. Refer to bulletin 03-08-47-001B (SI document 1633586) for details.
Timeout Feature
The CTS was originally launched in January 2002 with the APO and cigar lighter timing out at 10 minutes as the default. By moving fuse(s) from one cavity to another in the Underhood Electrical Center, the APO (and/or cigar lighter) would remain hot at all times. The default and relay orientation was changed to hot at all times during the first model year, based on customer feedback.
No Timeout Feature
In October 2003 (2004 model year), the time out feature was eliminated as a reconfigurable option from the CTS. On 2004 and later CTS models, the APO and cigar lighter must remain hot at all times due to wire and circuit changes at the Underhood Electrical Center.
TIP:Â There may be some confusion because on Cadillac SRX, the timeout feature can still be accomplished by adding a relay to the Underhood Electrical Center. This cannot be done on the CTS.
- Thanks to Brian Combs and Steve Apking
High-quality TAC case closings are critical to building an accurate database that supports all GM TAC users.Â
A TAC case closing recognition program for GM dealership service personnel started May 1, 2006 and will recognize two dealership service department employees per region each month for the next four months, ending August 31, 2006.
The recognition is for all dealers, including Saturn and Saab.
Each month, two $100 awards will be provided to dealership service personnel in each region, for a total of ten $100 awards each month, based on the following criteria:
- Clarity and detail of the case closing submission
- Technical value of the case closing submission
- Could the case closing submission help fix another vehicle with the same concern?
The person who submitted the selected TAC case closing will be awarded a $100 gift credit to their GM Superstore account. An account will be created for those who don't have one, including those at Saturn and Saab dealerships.
Dealer service managers for the winning submissions will be contacted by a TAC representative to verify the following:
- Employee name of who submitted the case closing
- If individual is still employed at the dealership
- Individual's position at the dealer, and other required information
Once verification has been made, The Mark of Excellence - Service Program Headquarters will process the $100 GM Superstore credit:
- A letter of notification will be sent to each winner at the dealership's address with the details of the award gift and use
- Program Headquarters will field questions related to the credit and redemption of the GM Superstore dollars
- A GM Superstore account will be created for winners without one
TAC is interested in receiving high quality case closing information. When you provide accurate and detailed case closing information, you are providing a quality case closing which is critical to the life cycle of the TAC Case. Contrary to popular belief, short and simple is not always the best.
First example:
Vehicle condition -- left front window inoperative
Repair -- replaced the driver's door module
A short and clear explanation is fine.
Second example:
Vehicle condition -- left front window inoperative
Repair -- repaired chafed wire
Repairing a chafed wire doesn't tell TAC or a fellow technician what was really repaired. A better explanation of the repair would be: Repaired brown wire circuit 1232, chafed on the park brake pedal bracket.
REMEMBER:Â The quality TAC case closing that you provide today may help a fellow technician tomorrow, and the case closing your fellow technician provides next week may help you next month.
Primary Contacts for Program:
GM TAC
Karen Raab
karen.d.raab@gm.com
810.835.9000
Mark Gordon
mark.a.gordon@gm.com
810.835.9012
Bill Szelag
bill.szelag@gm.com
810.835.9080
GM Dealer Recognition and Event Team
Rewards Supplier - ITA Group
www.gmrewards.net
800.376.1699
Shaun Lacher
shaun.lacher@gm.com
313.667.9350
- Thanks to Bill Szelag
This information applies to 2005-06 Chevrolet Equinox and Pontiac Torrent with VIN F (RPO LNJ) engine.
According to bulletin 06-06-04-008 (SI document 1765051), the EGR valve on these vehicles may have to be replaced, to address owner concerns about an illuminated SES lamp and accompanying DTCs.
The replacement kit p/n 89018176 provides all of the parts necessary to convert from a Delphi EGR valve to a Siemens valve.
The instruction sheet in some early kits may have contained inaccurate information about how to install the electrical connector included in the kit, which may result in an illuminated SES lamp. When the inaccuracy was discovered, the instruction sheet was corrected.
The information in document 1765051 is, and always has been, correct. If there is any doubt about how to install the connector, follow the instructions in document 1765051.
- Thanks to Angelo Girolamo and Jim Kelly
IMPORTANT:Â You must get authorization from your AVM before calling TAC for the internal PI. See step four below.
Owners of some 2004-05 Chevrolet Silverado and GMC Sierra trucks may comment that the engine coolant hot indicator comes on, or the engine overheats. This concern occurs when towing a heavy load and ambient temperatures are high.
The first Driver Information Center indicator is the ENGINE COOLANT HOT INDICATOR and comes on at 121°C (250° F).
If the engine temperature continues to increase, the ENGINE OVERHEATED INDICATOR comes on at 124°C (255°F).
PIP3574A contains updated information on a repair procedure for overheating in high ambient temperatures.
1. An ongoing investigation on 2004-2005 6.6 LLY diesel engines has determined that there are many factors that may lead to overheating.
TIP:Â All of the information in step three of the PI must be inspected and completed.
2. If the vehicle was built between start of production in 2004 and March 2005, verify that the ECM has been programmed with the newest software. The TIS software title is "new calibration to reduce the potential for the engine coolant hot temperature telltale coming on prematurely."
3. If the customer still has a concern of one or both of the overheat indicators coming on in high ambient temperatures, please document and complete all of diagnostics listed below.
A. Check for changes to the air intake areas or for aftermarket grille accessories. Make sure all air dams are in place and not modified. Remove any aftermarket grilles or accessories that may restrict air flow.
B. Visually inspect the Charge Air Cooler (CAC) to insure that it is not plugged externally. Use J 46091 to insure that all pipe connections are properly sealed and the CAC does not have a leak.
C. Monitor fan clutch operation and complete SI diagnostics for Fan Clutch Diagnosis.
D. Monitor the actual and desired turbo vane positions to verify that the turbocharger is performing properly.
E. Check the transmission oil level. An over-filled transmission can add to heat levels in the cooling system.
F. Check the air induction system. Insure that the filter is in good condition and is properly installed.
G. Obtain a weight slip that shows the gross vehicle weight of the vehicle/trailer if the overheat occurs only while towing.
H. Document ambient temperatures in the area when the overheating concern occurs.Â
4. If all diagnostics have been completed, and a condition of overheat has been verified, call the General Motors Technical Assistance Center to discuss repair procedures. This repair procedure must be authorized by the dealer's Area Service Manager (AVM).
5. If this overheat repair is completed, and the vehicle still overheats, call to update the GMTAC case, and do a Field Product Report using bulletin 02-00-89-002D.
- Thanks to Dan Oden
This describes the operation of the HVAC system on the 2006 Chevrolet Impala and Monte Carlo during a remote vehicle start event.
On vehicles without a Driver Information Center (DIC), the climate control system turns on at the setting it was set to when the vehicle was last turned off.
On vehicles with a Driver Information Center (DIC), if the ambient temperature reading is at or below 38°F (3°C) on the DIC, the HVAC system will go into defrost mode, the temperature will be full hot, and the blower will go to high speed.
If the ambient temperature reading is above 38°F (3°C) on the DIC, the HVAC system will go into vent mode, the temperature will be full cold, and the blower will go to high speed.
TIP:Â If the vehicle was built on or before December 30, 2005, verify that the HVAC control head has the latest software. If not, program the HVAC control head with the latest software so the system will perform as designed.
- Thanks to Dennis Kosmowski
This information applies to the 2002-06 Cadillac Escalade, Chevrolet Avalanche, Suburban, Tahoe, GMC Yukon and Denali with RPO JL4.
Some customers may comment on one or more of the following concerns:
- Stability System Disabled message displayed on the Driver Information Center (DIC)
- unwanted Stabilitrak activation
- vehicle lighting systems may dim noticeably
- VSES motor may come on unexpectedly
Check for excessive wear on the tires on the vehicle and verify that all the tires are the same size, brand, and model. The following examples could cause any of the conditions listed above.
- two tires on the vehicle are brand new and the other two tires have excessive wear
- tires are same size, different brands (i.e., two tires on the vehicle are Goodyear P245/75/16 and the other two tires are Firestone P245/75/16)
- tires are same brand and size, different models (i.e., two tires on the vehicle are Goodyear Wrangler SRA 265/70R17 and two tires are Goodyear Wrangler HP 265/70R17)
- Aftermarket wheels and tires (non-OEM 20 inch wheels with sand tires)
- Thanks to Jim Will
This information applies to the 2007 Chevrolet Suburban, Tahoe and GMC Yukon, Yukon XL, without AN3.
Some owners may comment that the adjustable pedals are inoperative. This could be caused by the wrong left I/P junction block installed. On vehicles NOT equipped with RPO AN3 (memory seats), check the part number of the left I/P junction block. The correct p/n is 15174608, located on a white label affixed to the left I/P junction block.
If the incorrect junction block is installed, replace with p/n 15174608. If the vehicle has the correct junction block, continue with normal diagnostics.
- Thanks to Jim Will
This information applies to the 2007 Cadillac Escalade, Chevrolet Tahoe and Suburban, and GMC Yukon and Denali.
Some customers may experience a rattle from the center of the instrument panel carrier when driving over bumps.
If the concern is isolated to the center of the I/P carrier, check the mounting of the OnStar module for being loose. If the OnStar module is rattling in its support bracket, add felt tape to the outer ribs of the bracket to tighten the fit between the bracket and the OnStar module.
- Thanks to Paul Radzwilowicz
This information applies to the Buick Rainier, Chevrolet TrailBlazer, GMC Envoy, Oldsmobile Bravada, and Saab 97x between 2004 and 2006.
When opening the rear liftgate, a squeak or creak noise may caused by the plastic hook on the CHMSL (Center High Mount Stop Lamp) molding rubbing against the steel hinge pin of the liftgate.
Lubricate between the hinge pin and the plastic hook on the CHMSL molding with GM Lubricant p/n 12346241 (US) or 10953474 (Canada) or equivalent.
- Thanks to Dino Poulos
This information applies to the 2007 Cadillac Escalade, Chevrolet Tahoe and Suburban, and GMC Yukon and Denali.
Some owners may comment that the rear power doors will not unlock. The battery may also go dead at times.
Power may be going to the rear power door lock actuator circuits (circuit 295) at all times.
Check the rear door lock relay. If the relay is stuck in the LOCK position, replace the left IP fusebox. The rear power door lock relay is internal to the left IP fuse block and cannot be replaced separately.
- Thanks to Paul Radzwilowicz
