IGNITION SYSTEM CHECK CHART REVISION C4-A

Models Affected: 1985 Somerset Regals with 3.0l Engines (Vin Code L)

The C3I Ignition System Check Chart C4-A wiring diagram shown below has been revised to include additional wire coding information. Please update page 6E3-306 of your 1985 Buick Chassis 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.