POOR PERFORMANCE/DETONATION SHORTED EGR CUTOUT RELAY

The 1982 EGR cut-out relay on early "G" and "B" cars could be mounted in such a way that moisture can intrude through the electrical connector and short out the relay. If the relay is shorted out, the EGR valve will not function, causing detonation and/or poor engine performance. See illustration.

If the EGR valve is not functioning, follow the diagnosis chart in the 1982 Chevrolet Shop Manual on page 6E-52 to verify if another condition exists, rendering the EGR valve inoperative.

If the relay is shorted, replace with P/N 10022616 and bend mounting bracket so terminals and plug are pointing down slightly.

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.