Campaign - Transmission Overheats In Cold Weather: Overview
CUSTOMER SATISFACTIONBulletin No.: 09038A
Date: September 29, 2010
Subject: 09038A - Enhanced Calibration for Transmission Overheat in Extreme Cold Air Temperatures
Models:
2006-2008 Chevrolet Silverado HD
2006-2008 GMC Sierra HD Equipped with Allison 1000 Transmission (RPO MW7) and Duramax 6.6L Diesel V8 Engine (RPO LLY/LBZ/LMM - VIN 2/D/6)
Located in Certain U.S. Cold Weather States; Alberta, British Columbia, Manitoba, Newfoundland, Northwest Territories, Ontario, Quebec, Saskatchewan, and Yukon
Supercede:
This bulletin is being revised to extend the expiration date to September 30, 2011.Please discard all copies of bulletin 09038, issued September 2009.
THIS PROGRAM IS IN EFFECT UNTIL September 30, 2011.
Condition
Certain 2006-2008 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with an Allison 1000 transmission (RPO MW7) and Duramax 6.6L diesel V8 engine (RPO LLY/LBZ/LMM - VIN 2/D/6), and located in certain U.S. cold weather states; Alberta, British Columbia, Manitoba, Newfoundland, Northwest Territories, Ontario, Quebec, Saskatchewan, and Yukon, may have limited or no transmission fluid (oil) flow through the transmission oil cooler after sitting for an extended period of time, such as overnight, during extreme cold temperatures, less than -40 °F or °C, excluding wind chill. If the "Elevated Idle Mode", cabin heater performance option is operative and the engine is allowed to idle for an extended period of 15 to 30 minutes while cooler flow is limited, the transmission fluid may overheat, resulting in transmission damage, and subsequent failure. These low temperatures only occur in the areas listed above, and therefore, only vehicles in these areas are involved in this program.
Correction
Dealers are to reprogram the Transmission Control Module (TCM) with a new enhanced calibration.
Vehicles Involved
Involved are certain 2006-2008 model year Chevrolet Silverado HD and GMC Sierra HD vehicles, equipped with an Allison 1000 transmission (RPO MW7) and Duramax 6.6L diesel V8 engine (RPO LLY/LBZ/LMM - VIN 2/D/6), located in certain U.S. cold weather states; Alberta, British Columbia, Manitoba, Newfoundland, Northwest Territories, Ontario, Quebec, Saskatchewan, and Yukon, and built within these VIN breakpoints:
Important
Dealers are to confirm vehicle eligibility prior to beginning repairs by using the Required Field Actions section in the Global Warranty system. Not all vehicles within the above breakpoints may be involved.
For dealers with involved vehicles, a listing with involved vehicles containing the complete vehicle identification number, customer name, and address information has been prepared and will be provided through the GM GlobalConnect Recall Reports. Dealers will not have a report available if they have no involved vehicles currently assigned.
The listing may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete this program is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this report to the follow-up necessary to complete this program.
Parts Information
No parts are required for this program.
Service Procedure
Do not attempt to order the calibration number from GMSPO. The calibration numbers required for this service procedure are programmed into control modules via a Multiple Diagnostic Interface (MDI) and TIS2WEB with the calibration update. UseTIS2WEB on or after September 1, 2009 to obtain the calibration. If you cannot access the calibration, call the Techline Customer Support Center and it will be provided.
For step-by-step programming instructions, please refer to SI and the Techline Information System (TIS) terminal.
1. Verify that there is a battery charge of 12 to 16 volts. The battery must be able to maintain a charge during programming. Only use an approved Midtronic 165-PSC charger to maintain proper battery voltage during programming.
2. Reprogram the transmission control module (TCM). Refer to SI and Service Programming System (SPS) documentation for programming instructions, if required.
1. Connect the MDI or Tech 2(R) to the vehicle.
Note
Select J2534 MDI or J2534 Tech 2(R) and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen. The J2534 MDI will reprogram the module in less time than the Tech 2(R) scan tool. DO NOT choose "Tech 2 Legacy Pass-Thru".
2. Select J2534 MDI or J2534 Tech 2(R) and Reprogram ECU from the Select Diagnostic Tool and Programming Process screen.
3. Select TCM Transmission Control Module from the Supported Controllers screen.
4. Follow the on-screen instructions.
3. Using the MDI or Tech 2(R), clear all DTCs, if required.
Customer Reimbursement - For GM US
All customer requests for reimbursement for previous repairs for the condition will be handled by the Customer Assistance Center, not by dealers.
A General Motors Customer Reimbursement Procedure and Claim Form is included with the customer letter.
Important
(For GM Only) Refer to the GM Service Policies and Procedures Manual, section 6.1.12, for specific procedures regarding customer reimbursement and the form.
Customer Reimbursement - For Canada
Customer requests for reimbursement for previous repairs for the condition are to be submitted to the dealer by September 30, 2011.
All reasonable customer paid receipts should be considered for reimbursement. The amount to be reimbursed will be limited to the amount the repair would have cost if completed by an authorized General Motors dealer.
When a customer requests reimbursement, they must provide the following:
- Proof of ownership at time of repair.
- Original paid receipt confirming the amount of repair expense(s) that were not reimbursed, a description of the repair, and the person or entity performing the repair.
Claims for customer reimbursement on previously paid repairs are to be submitted as required by WINS.
Important
Refer to the GM Service Policies and Procedures Manual, section 6.1.12, for specific procedures regarding customer reimbursement verification.
Courtesy Transportation
The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program is very important in maintaining customer satisfaction. Dealers are to ensure that these customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. Dealers should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.
Warranty Transaction Information
Submit a claim using the table below.
* Enter the amount reimbursed to the customer in Net Item.
Customer Notification
General Motors will notify customers of this program on their vehicle (see copy of customer letter included with this bulletin).
Dealer Program Responsibility
All unsold new vehicles in dealers' possession and subject to this program must be held and inspected/repaired per the service procedure of this program bulletin before customers take possession of these vehicles.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle, or ownership, through September 30, 2011.
Customers who have recently purchased vehicles sold from your vehicle inventory, and for which there is no customer information indicated on the dealer listing, are to be contacted by the dealer. Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this program enters your vehicle inventory, or is in your dealership for service through September 30, 2011, you must take the steps necessary to be sure the program correction has been made before selling or releasing the vehicle.
Disclaimer