NEW EXHAUST VALVE PART NUMBER (IMPROVED VALVE RELEASED)

EFFECTIVE WITH VIN J7005332, ON JUNE 15, 1988, AN IMPROVED EXHAUST VALVE WENT INTO PRODUCTION. THIS NEW EXHAUST VALVE MAY BE INTERCHANGED WITH THE 4BD1 NATURAL AND TURBO ENGINE.

NOTE: THE ONLY IDENTIFICATION BETWEEN FORMER VALVE AND NEW EXHAUST VALVE IS BY PART NUMBER.

LISTED BELOW IS THE PART NUMBER OF THE NEW EXHAUST VALVE:

PARTS INFORMATION

QUANTITY PART NUMBER DESCRIPTION -------- ----------- ----------- 4 94333114 EXHAUST VALVE

COPYRIGHT 1988 GMC TRUCK DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.

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.