GM Service Manual Online
For 1990-2009 cars only

COLD START HESITATION AND STALL, DETONATION (PROM)

VEHICLES AFFECTED: 1989 J AND L CAR W/2.0L (CODE 1) ENGINE AND 5SPD TRANSMISSION

A new CAL-PROM is now available for owners of 1989 J and L body cars with manual 5-speed transmissions. Concerns that this new CAL-PROM address include:

Light Detonation

Decel Pop-Backs

Cold Start Hesitation and Stall

All of the above concerns have been addressed in one new CAL-PROM listed below:

BROADCAST SCANNER USAGE PROM P/N CODE I. D. ----- -------- ---- -----

1989 J - FED. 16148390 ATZU 8401 1989 L - FED. 16148393 ATZX 8421

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.