COLD START STALL (INSTALL NEW PROM)

SUBJECT: COLD START STALL (INSTALL NEW PROM)

VEHICLES AFFECTED: 1992 "C/K" TRUCKS AND "G" VANS WITH .5.0L ENGINE (VIN H - RPO L03)

CONDITION:

--------- Some owners of 1992 model year "C/K" trucks and "G" vans with 5.0 Litre V8 engines (VIN H) may comment of engine cold start stall. The potential stall generally occurs when the throttle is slightly opened.

CAUSE:

----- Initial cold start stalling was due to lean fueling during cold start operation.

CORRECTION:

---------- If normal diagnostics and service procedures do not correct the above condition, a revised calibration PROM should be installed (See below).

Transmission Emissions New Broad New PROM Scanner castCode Part No. I.D --------------------------------------------------------------------------- MD8 (Auto) NA5/NA6 BFUS 16193107 3115 MD8 (Auto) NB2 (Calif) BFUU 16193109 3135 MG5 (Manual) NA5/NA6 BFUT 16193108 3125

For vehicles repaired under warranty use:

Labour Time: (C/K: 0.6 Hours; G; 0.5 hours)

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.