GM Service Manual Online
For 1990-2009 cars only

SERVICE MANUAL UPDATE-SEC.8D COMPUTER SYSTEM DIAG. CHART B

VEHICLES AFFECTED: 1990 E EQUIPPED WITH CRT

Please update you 1990 Service Information Manual Section 8D, Chart B (colour CRT blank with ignition on) to include the step shaded in Figure 1.


Object Number: 78012  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.