FAILURE TO RUN COLD OFR HES. NEW CAL-PROM LISTING

SUBJECT: FAILURE TO RUN COLD OR HESITATES (NEW CAL PROM) (Revised to Change No. from 90-620-108 to 90-620-101)

VEHICLES AFFECTED: 1988-90 J AND N CAR WITH 2.OL TURBO ENGINE VIN CODE "M"

Customer comments of cold driveability roughness, hesitation, or failure to run after a cold start and driveaway maneuver may be repaired with the installation of a new CAL-PROM listed below:

Broadcast Scanner Usage Prom P/N Code I.D. ------------------ --------- --------- ------- 1988 Auto Trans. 16153406 AUWS 3421 1988 5-Spd Trans. 16153405 AUWR 3411 1989-90 Auto Trans. 16153407 AUWT 3431 1989-90 5-Spd Trans. 16153408 AUWU 3441

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.