Some 1984-85 'F' cars with 2.5L engines and 5-speed manual transmissions may exhibit one of two different gear rattle noise conditions which can be described as follows:
CONDITION NO.1 (1984 OR 1985 MODELS):
Neutral Gear Rattle - transmission gear rattle noise experienced with the shift lever in the neutral position and the clutch engaged.
CONDITION NO. 2 (1985 MODEL ONLY):
Overrun Gear Rattle - transmission gear rattle noise experienced during deceleration (overrun) in either 2nd, 3rd, or 4th gears with the clutch engaged.
Condition No. 1 can be corrected as follows:
1. Set idle speed to specification. 2. Replace the following parts:
Clutch Pressure Plate Assembly P/N 14091979 Clutch Driven Disc P/N 14091980
Condition No. 2 can be corrected by replacing the following parts:
Shift Lever (Firebird only) P/N 10042197 Clutch Driven Disc (Camaro & Firebird) P/N 14091980
Use applicable labour time and operation number.
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.