Owner Letter

99041

(Sample Of Notification Used)

May, 2000

Dear General Motors Customer:

This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.

Reason For This Recall:
General Motors has decided that a defect which relates to motor vehicle safety exists in certain 1991-1996 4WD wheel drive (4WD) Blazers and Jimmys, and 1994-1996 4WD S-10 and Sonoma pickup trucks. Some of these Vehicles exhibit a condition in which a switch that signals the antilook brake system (ADS) module when the vehicle is in 4WD may malfunction. The ABS module is designed with two different operating algorithms: one for 2-wheel drive (2WD) operation and another for 4WD drive operation. This allows the ABS system to compensate for the braking torque applied to the rear wheels through the drivetrain when the vehicle is in 4WD drive. When the vehicle is in 2WD, a malfunction switch may send an incorrect signal to the ABS module. If this occurs during an ABS stop, a somewhat longer stopping distance could result. If this occurred when minimum stopping distance was required, it could result in a vehicle crash.

What Will Be Done:
Your dealer will install a new transfer case selector switch, wiring harness, and an additional switch to ensure that the ABS receives the 4WD signal only when the drivetrain is in 4WD. This service will be performed for you at no charge.

How Long Will The Repair Take?
The length of time required to perform this service correction is approximately 30 minutes. Additional time may be required to schedule and process your vehicle. If your dealer has a large number of vehicles awaiting service, this additional time may be significant. Please ask your dealer if you wish to know how much additional time will be needed to schedule process and repair your vehicle.

Contacting Your Dealer:
Please contact your Chevrolet/GMC dealer as soon as possible to arrange a service date. Parts are available and instructions for making this correction have been sent to your dealer. Your Chevrolet/GMC dealer is best equipped to obtain parts and provide services to correct you vehicle as promptly as possible. Should your dealer be unable to schedule a service date within a reasonable time, you should contact the appropriate Customer Assistance Center at the listed number below:

Division Number Deaf, Hearing Impaired or Speech
Chevrolet 1-800-222-1020 1-800-833-2438
GMC 1-800-462-8782 1-800-462-8583
Utilize Telecommunication Devices

If, after contacting the appropriate Customer Assistance Center, you are still not satisfied that we have done our best to remedy this condition without charge and within a reasonable time, you may wish to write the Administrator, National Highway Traffic Safety Administration, 400 Seventh Street, SW, Washington, DC 20590 or call 1-800-424-9393 (Washington, DC residents use (202-366-0123).

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

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