When an owner returns to the dealership with a Remote Keyless Entry (RKE) transmitter concern on 1991-93 models, it is important to follow the procedure below:
Determine if the batteries are operational. Battery life for each transmitter should be 2 years. There have been some cases where RKE transmitters have been replaced when the only problem was a dead battery. Refer to Section 9K in the Service Manual for proper diagnostic procedures and battery replacement information.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.