Customer Satisfaction - Instrument Panel Cluster Gauges Inoperative

General Motors has decided that certain 2002 model year Chevrolet TrailBlazer and TrailBlazer EXT; GMC Envoy and Envoy XL; and Oldsmobile Bravada vehicles may have an intermittent condition at vehicle start-up in which the instrument panel cluster may not power up, resulting in most of the displays, telltale lights, and functions being inoperative.

Dealers are to reprogram the instrument panel cluster software.

Involved are certain 2002 model year Chevrolet TrailBlazer and TrailBlazer EXT; GMC Envoy and Envoy XL; and Oldsmobile Bravada vehicles built within these VIN breakpoints:

Important: Dealers should confirm vehicle eligibility through GMVIS (GM Vehicle Inquiry System) or GM Access Screen (Canada only) or DCS Screen 445 (IPC only) prior to beginning program repairs. [Not all vehicles within the above breakpoints may be involved.]

Involved vehicles have been identified by Vehicle Identification Number. Computer listings containing the complete Vehicle Identification Number, customer name and address data have been prepared, and are being furnished to involved dealers with the program bulletin. The customer name and address data furnished will enable dealers to follow up with customers involved in this program. Any dealer not receiving a computer listing with the program bulletin has no involved vehicles currently assigned.

These dealer listings may contain customer names and addresses obtained from Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states/provinces/countries. Accordingly, you are urged to limit the use of this listing to the follow-up necessary to complete this program.

No parts are required for this program.

Some vehicles involved in this customer satisfaction program may have had their instrument panel cluster (IPC) replaced prior to this program. As a result, the replacement cluster may not need to be reprogrammed. To determine whether the IPC in the vehicle requires reprogramming, the following procedure must be performed.

Important: The Tech 2 diagnostic tool must be updated with software version 8.0, released July 2002, or newer, in order to perform the reprogramming.

1. Connect the Tech 2 to the vehicle's data link connector (DLC) located under the instrument panel to the right of the steering column.
2. Turn the ignition switch to the ON position.
3. Turn the Tech 2 ON by pressing the power button.
4. Verify that the Tech 2 has been updated with software version 8.0 or newer by reviewing the information on the bottom of the screen.
5. If the Tech 2 has the correct software, press the enter button. If the Tech 2 does not have the correct software, update the Tech 2 software.
6. Select "Diagnostics" on the "Main Menu" screen.
7. Select the "2002" model year.
8. Select "LD Trk, MPV, Incomplete."
9. Select "Body" on the "System Selection Menu" screen.
10. Select the letter "S" (for two wheel drive vehicle) or "T" (for four wheel drive vehicle) on the "Vehicle Identification Product Line" screen.
11. Select the appropriate vehicle name plate (Bravada, Envoy, Envoy XL, TrailBlazer, TrailBlazer EXT).
12. Select the HVAC type.
13. Select "Instrument Panel Cluster."
14. Select "ID Information" (F4).
15. Select "Module Information 2" (F1).
16. Review the IPC software part number displayed on the Tech 2.

•

If the part number displayed is 09363270 or 15085477, it will be necessary to reprogram the IPC. Press the "Exit" button once to return to the "Data Display" screen and then select "Module Information 1" (F0) to obtain the 8-digit GM part number for the IPC. This part number is required for determining the correct software calibration in TIS 2000. Proceed to Step 17.

•	If the part number displayed is NOT 09363270 or 15085477, DO NOT reprogram the IPC. Proceed to Step 22 and install the GM Identification Label.

17. Press the "Exit" button on the Tech 2 as necessary until the "Main Menu" is displayed.
18. Select "Service Programming System."
19. Follow the on-screen instructions on the Tech 2 and in TIS 2000 for reprogramming the IPC.
20. After reprogramming is complete, turn the ignition switch to the OFF position and disconnect the Tech 2.
21. Turn the ignition switch to the ON position and verify proper IPC operation.
22. Install the GM Identification Label.

Place a Recall Identification Label on each vehicle corrected in accordance with the instructions outlined in this Product Recall Bulletin. Each label provides a space to include the recall number and the five (5) digit dealer code of the dealer performing the recall service. This information may be inserted with a typewriter or a ball point pen.

Put the Recall Identification Label on a clean and dry surface of the radiator core support in an area that will be visible to people servicing the vehicle. When installing the Recall Identification Label, be sure to pull the tab to allow the adhesion of the clear protective covering. Additional Recall Identification Labels for US dealers can be obtained from Dealer Support Materials by either ordering on the web from DWD Store, gm-dealerworld.com, or calling 1-866-700-0001 (Monday-Friday, 8:00 am to 5:00 pm EST). Ask for Item Number S-1015 when ordering.

Additional Recall Identification Labels for IPC dealers can be obtained from your Regional Marketing Office.

Place a Program Identification Label on each vehicle corrected in accordance with the instructions outlined in this Product Program Bulletin. Each label provides a space to include the program number and the five (5) digit dealer code of the dealer performing the program service. This information may be inserted with a typewriter or a ball point pen.

Put the Program Identification Label on a clean and dry surface of the radiator core support in an area that will be visible to people servicing the vehicle. Additional Program Identification Labels for Canadian dealers can be obtained from DGN by calling 1-800-668-5539 (Monday-Friday, 8:00 am to 5:00 pm EST). Ask for Item Number GMP91 when ordering.

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 recall 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 Program Claim with the information indicated below.

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

Customers will be notified of this program on their vehicles by General Motors (see copy of customer letter included with this bulletin).

Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached suggested dealer letter.

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, from this time forward.

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. This could be done by mailing to such customers a copy of the customer letter accompanying this bulletin. 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 in the future, 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 want your experience owning your 2002 model year Chevrolet TrailBlazer or TrailBlazer EXT; GMC Envoy or Envoy XL; or Oldsmobile Bravada vehicle to be better than any other you've had ... which is why we're writing.

We have learned that your 2002 model year Chevrolet TrailBlazer or TrailBlazer EXT; GMC Envoy or Envoy XL; or Oldsmobile Bravada vehicle may have an intermittent condition at vehicle start-up in which the instrument panel cluster may not power up, resulting in most of the displays, telltale lights, and functions being inoperative.

We've sent your GM dealer instructions for reprogramming the instrument panel cluster software in your vehicle. This service will be performed for you at no charge .

We recommend that you contact your dealer to arrange a service date.

Presenting the attached card to your dealer will assist in making the necessary correction in the shortest possible time.

If you no longer own this vehicle, please check the appropriate box and provide new owner information, if available.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed below:

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 this causes you. Also, we want you to know that we will continue to do everything we can to ensure that you are completely satisfied with our products.

General Motors Corporation

Enclosure