Customer Satisfaction 99076 - Accessory (Serpentine) Drive Belt Tensioner Pulley

Completion of this campaign lifts the stop delivery order issued on October 29, 1999 (Admin Number: WIS19990094).

General Motors has decided that certain 2000 Chevrolet Corvette model may exhibit a condition in which the accessory (serpentine) drive belt tensioner pulley fails, resulting in the loss of the power steering pump, the water pump, and generator function. A Check Engine lamp will be illuminated.

To prevent the possibility of this condition occurring, dealers are to replace the accessory drive belt tensioner. The belt will be inspected for damage and will be replaced if necessary. The hood insulator will be inspected for any damage from the belt and will be replaced if necessary.

Involved are the following 2000 Chevrolet Corvette model vehicles:

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 campaign bulletin. The customer name and address data furnished will enable dealers to follow-up with customers involved in this campaign. Any dealer not receiving a computer listing with the campaign bulletin has no involved vehicles currently assigned.

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

Parts required to complete this campaign are to be obtained from General Motors Service Parts Operations (GMSPO). Please refer to your "involved vehicles listing" prior to ordering requirements. Normal orders should be placed on a DRO = Daily Replenishment Order. An emergency requirement should be ordered on a CSO = Customer Special Order.

Important: Due to the small number of vehicles involved and due to limited initial parts availability, dealers are encouraged not to order campaign parts for use as shelf stock. Parts should only be ordered for the actual repair of an involved vehicle, with priority given to retail sold customer vehicles.

Customers will be notified of this campaign on their vehicles by General Motors (see copy of typical customer letter included with this bulletin - actual divisional letter may vary slightly).

All unsold new vehicles in dealers' possession and subject to this campaign MUST be held and inspected/repaired per the service procedure of this campaign bulletin BEFORE customers take possession of these vehicles.

Dealers are to service all vehicles subject to this campaign 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. Campaign 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 campaign enters your vehicle inventory, or is in your dealership for service in the future, please take the steps necessary to be sure the campaign correction has been made before selling or releasing the vehicle.

1. Remove the accessory drive belt.
2. Remove the accessory drive belt tensioner.
3. Install a new accessory drive belt tensioner, P/N 12559325.

Tighten
Tighten the bolts to 50 N·m (37 lb ft).

4. Inspect the accessory (serpentine) drive belt for damage. If the belt is damaged, replace the belt with P/N 12561501.
5. Install the accessory drive belt.
6. If the accessory (serpentine) drive belt was broken, inspect the hood insulator for damage. If the insulator was damaged, replace the insulator with P/N 10401057.
7. Install the GM Campaign Identification Label.

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

Each "Campaign Identification Label" is to be located on the radiator core support in an area which will be visible when the vehicle is brought in by the customer for periodic servicing. When installing the Campaign Identification Label, be sure to pull the tab to allow the adhesion of the clear protective covering. Additional Campaign Identification Labels can be obtained from VISPAC Incorporated by calling 1-800-269-5100 (Monday-Friday, 8:00 am to 4:30 pm Eastern Standard Time). Ask for Item Number S-1015 when ordering.

Apply the "Campaign Identification Label" only on a clean, dry surface.

Submit a Product Campaign Claim with the information indicated below. Refer to the General Motors Corporation Claims Processing Manual for details on Product Campaign Claim Submission.

Dear Chevrolet Customer:

This notice is sent to inform you of a recall campaign that includes your vehicle.

General Motors has decided that certain 2000 Chevrolet Corvette model may exhibit a condition in which the accessory (serpentine) drive belt tensioner pulley fails, resulting in the loss of the power steering pump, the water pump, and generator function. A Check Engine lamp will be illuminated.

To prevent the possibility of this condition occurring, your dealer will replace the accessory drive belt tensioner. The belt will be inspected for damage and will be replaced if necessary. The hood insulator will be inspected for any damage from the belt and will be replaced if necessary. This service will be performed for you at no charge .

Please contact your Chevrolet dealer as soon as possible to arrange a service date and to assure parts availability. Instructions for making this correction have been sent to your dealer. Please ask your dealer if you wish to know how much time will be needed to schedule, process, and repair your vehicle.

If you experience any trouble scheduling your vehicle or you have any questions regarding this recall action, please contact the appropriate Customer Assistance/Relations Center at the number listed below:

The enclosed customer reply card identifies your vehicle. Presentation of this card 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 postage paid reply card and returning it to us.

Your dealer will 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 are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

Chevrolet Motor Division

General Motors Corporation

Enclosure