Customer Satisfaction - Unwanted Traction Control Activation-Reposition Sensor

Step 4 of the service procedure has been revised. Please review the change immediately. Discard all copies of bulletin 07283, dated October 2007.

*****THIS PROGRAM IS IN EFFECT UNTIL OCTOBER 31, 2008.*****

Certain 2008 model year HUMMER H3 vehicles may have a brake control sensor that is out of position. If the sensor is out of position, the StabiliTrak System will be inoperative and there may be an unwanted traction control system (TCS) activation during vehicle acceleration. During an unwanted TCS activation, the TCS lamp in the instrument panel will flash and the vehicle will have reduced power for up to 5 seconds, depending on the type of acceleration. After 5 seconds, the TCS will turn off and normal acceleration will resume; however, the condition may occur again after a brief period of normal acceleration. The driver can turn the TCS off to eliminate this condition.

Dealers are to inspect, and if necessary, reposition the brake control (yaw rate) sensor.

Involved are certain 2008 model year HUMMER H3 vehicles built within these VIN breakpoints:

Important: Dealers are to confirm vehicle eligibility prior to beginning repairs by using the GM Vehicle Inquiry System (GMVIS). 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 applicable system listed below. Dealers will not have a report available if they have no involved vehicles currently assigned.

-- US dealers - GM DealerWorld Recall Information

-- Canadian dealers - GMinfoNet Recall Reports

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.

No parts are required for this program.

1. Remove the driver’s side front sill plate. Refer to Front Side Door Sill Plate Replacement in SI.
2. Lift the front carpet enough to access the yaw rate sensor with your hand.
3. Insert your hand between the carpet and floor pan of the vehicle. The yaw sensor is underneath the driver’s seat.

Correct Yaw Rate Sensor Location





Incorrect Yaw Rate Sensor Location




4. Determine the orientation of the yaw rate sensor connector and wire harness.

•	If the connector and harness (2) are facing outward toward the location of the driver’s side sill plate (3), repositioning of the yaw rate sensor is required. The yaw rate sensor is installed 180 degrees out of position. Refer to Step 5.

•	If the connector and harness (2) are facing the console and passenger seat area (3), repositioning of the yaw rate sensor is not required. Refer to Steps 10 and 12.

5. Remove the driver’s side front seat from the vehicle. Refer to Front Seat Replacement--Bucket in SI.
6. Remove the front carpet enough to access the yaw rate sensor (1).
7. Remove the two fasteners from the yaw rate sensor.
8. Reposition the yaw rate sensor (1). The yaw rate sensor connector and harness (2) should face the console and passenger seat (3) area of vehicle. Refer to Correct Yaw Rate Sensor Location illustration in this bulletin.
9. Install the two fasteners.

Tighten
Tighten the fasteners to 9 N·m (80 lb-in).

10. Reposition the carpet to its original location.
11. Install the driver’s side front seat. Refer to Front Seat Replacement--Bucket in SI.
12. Install the driver’s side front sill plate. Refer to Front Side Door Sill Plate Replacement in SI.

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 Warranty. 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.

Submit a Product Claim with the information indicated below:

Refer to the General Motors WINS Claims Processing Manual for details on Product Recall Claim Submission.

General Motors will notify customers of this program on their vehicle (see copy of customer letter included with this bulletin).

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 October 31, 2008.

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 October 31, 2008, you must take the steps necessary to be sure the program correction has been made before selling or releasing the vehicle.

Dear General Motors Customer:

We have learned that your 2008 model year HUMMER H3 may have been built with a brake control sensor that is out of position. If the sensor is out of position, the StabiliTrak System will be inoperative and there may be an unwanted traction control system (TCS) activation during vehicle acceleration. During an unwanted TCS activation, the TCS lamp in the instrument panel will flash and the vehicle will have reduced power for up to 5 seconds, depending on the type of acceleration. After 5 seconds, the TCS will turn off and normal acceleration will resume; however, the condition may occur again after a brief period of normal acceleration. You can turn the TCS off to eliminate this condition.

Your satisfaction with your H3 is very important to us, so we are announcing a program to prevent this condition or, if it has occurred, to fix it.

What We Will Do: To prevent this condition from occurring, your HUMMER dealer will inspect, and if necessary, reposition the brake control sensor. This service will be performed for you at no charge until October 31, 2008 .

What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as possible to schedule an appointment for this repair.

Customer Reply Form: The enclosed customer reply form identifies your vehicle. Presentation of this form to your dealer will assist in making the necessary correction in the shortest possible time. If you no longer own this vehicle, please let us know by completing the form and mailing it back to us.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below. The Customer Assistance Center’s hours of operation are from 8:00 AM to 11:00 PM, EST, Monday through Friday.

Courtesy Transportation: If your vehicle is within the New Vehicle Limited Warranty your dealer may provide you with shuttle service or some other form of courtesy transportation while your vehicle is at the dealership for this repair. Please refer to your Owner’s Manual and your dealer for details on Courtesy Transportation.

We sincerely regret any inconvenience or concern that this situation may cause you. We want you to know that we will do our best, throughout your ownership experience, to ensure that your HUMMER vehicle provides you many miles of enjoyable driving.

Scott Lawson

General Director

Customer and Relationship Services

Enclosure

07283