GM Service Manual Online
For 1990-2009 cars only

IDLE STALL OR SLIGHT RPM OSCILLATION

VEHICLES AFFECTED: 1985 AND 1986 L-4 LQ5 (VIN CODE P) J CAR AND MANUAL TRANSMISSION

Customer comments of idle stall or slight idle oscillation (plus or minus 200) after declutching or stopping the vehicle can be remedied by a PROM change, as identified below:

Year/Emission Trans./Axle Service PROM ------------- ----------- ------------- 1985/Federal 4-spd./3.32 Heater Only 1228360 1985/Federal 4-spd./3.65 A/C Only 1228362 1985/Federal 5-spd./3.83 A/C or Heater 1228361

1986/Federal 4-spd./3.32 Heater Only 1228366 1986/Federal 4-spd./3.65 A/C Only 1228365 1986/Federal 5-spd./3.83 A/C or Heater 1228368

Use standard Labour Time Guide for service PROM exchange.


Object Number: 79308  Size: FS


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Object Number: 79307  Size: FS


Object Number: 78145  Size: FS


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Object Number: 78141  Size: FS

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.