NEW PRODUCT INFORMATION ECM CAVITY REVISION

Model and Year: 1988 CAVALIER WITH 2.8L MPI ENGINE

The ECM cavities used for MAT input on page 6E3-Al-34 of the 1988 Service Manual should be changed. Circuit 472 is located at F16 (not C12) and circuit 452 is located at B5 (not D2).

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.