ECM WIRING AND TERMINAL CONNECTOR DIAGRAM REVISIONS

VEHICLES AFFECTED: 1986 "C", "H", "A"

The ECM wiring and ECM terminal connector diagrams in the 1986 Firenza, Calais, Cutlass Ciera, Delta 88 and Ninety-Eight Chassis Service Manual (VOL I) have been revised. Please update pages 6E3-A3-4 through 6E3-A3-9 of your Service Manual with this information.

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.