GM Service Manual Online
For 1990-2009 cars only

SERVICE MANUAL REVISION FOR CODE 48 CHART

SERVICE MANUAL REVISION CODE 48# MISFIRE DIAGNOSIS, SECTION 6E3

VEHICLES AFFECTED: 1988 C AND H CARS WITH 3800 (VIN C) ENGINE -----------------

This revised diagnosis replaces the Code 48 chart currently in the service manual.


Object Number: 80438  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.