HOT DRIVEABILITY IMPROVEMENTS PROM UPDATE

SOME 1982 CHEVETTES MAY EXPERIENCE HOT TIP-IN HESITATION. IF THIS CONDITION IS ENCOUNTERED, THE FOLLOWING CHANGES ARE RECOMMENDED: (1) ON VEHICLES WITH MANUAL TRANSMISSION (MY1) AND FEDERAL (NA5) OR ALTITUDE EMISSIONS (NA6), SET INITIAL TIMING AT 8 BTDC. IN ADDITION, INSTALL NEW PROM, P/N 1226080. (2) ON VEHICLES WITH AUTOMATIC TRANSMISSION (MX1) AND FEDERAL (NA5) OR ALTITUDE EMISSIONS (NA6), SET INITIAL TIMING AT 8 BTDC. (3) ON VEHICLES WITH AUTOMATIC TRANSMISSION (MX1) AND CALIFORNIA EMISSIONS (NB2), SET INITIAL TIMING AT 8 BTDC. (4) ON VEHICLES WITH MANUAL TRANSMISSION (MY1) AND CALIFORNIA EMISSIONS (NB2), SET INITIAL TIMING AT 4 BTDC. USE APPLICABLE LABOR OPERATION.

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.