SERVICE MANUAL UPDATE ELECTRICAL DIAGNOSIS. Buick Century 1988

MODELS AFFECTED: 1988 CENTURYS

The following pages reflect product changes. These pages are contained herein:

8A-11-4-A Fuse Block Details 8A-11-5-A 8A-14-1-A Ground Distribution 8A-14-2-A 8A-14-3-A 8A-14-4-A 8A-30-0-A Starter and Charging System 8A-31-1-A Coolant Fan 8A-90-0-A Wiper/Washer 8A-91-0-A Wiper/Washer

In addition, the following pages should be revised to reflect minor changes for late production, as noted.

8A-11-3 Wire routing change. The PNK/WHT (939)wire from the FP/INJ fuse now runs through connector C100, terminal G7. 8A-20-0 Wire routing change. The PNK/WHT (439)wire from the DSL/ECM fuse now runs through connector C100, terminal G7. 8A-20-3 Wire routing change. The PNK/WHT (439)wire from the DSL/ECM fuse now runs through connector C100, terminal G7. 8A-21-0 Wire routing change. The PNK/WHT (439)wire from the DSL/ECM fuse now runs through connector C100, terminal G7. 8A-21-3 Wire routing change. The PNK/WHT (439)wire from the DSL/ECM fuse now runs through connector C100, terminal G7. 8A-22-2 Wire routing change. The PNK/WHT (939)wire from the FP/INJ fuse now runs through connector C100, terminal G7. 8A-22-3 Wire routing change. The PNK/WHT (939)wire from the FP/INJ fuse now runs through connector C100, terminal G7. 8A-22-4 Wire routing change. The PNK/WHT (439)wire from the ECM/IGN fuse now runs through connector C100, terminal G7.

Object Number: 74980 Size: FS

Object Number: 74979 Size: FS

Object Number: 74978 Size: FS

Object Number: 74977 Size: FS

Object Number: 75107 Size: FS

Object Number: 75106 Size: FS

Object Number: 74810 Size: FS

Object Number: 74809 Size: FS

Object Number: 75105 Size: FS

Object Number: 74976 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.