SERVICE MANUAL UPDATE SEC.1C REV. CONNECTOR/TERMINAL CHART

SUBJECT: SERVICE MANUAL UPDATE-SECTION 1C-REVISED ECM CONNECTOR AND TERMINAL IDENTIFICATION IN DIAGNOSTIC CHART

VEHICLES AFFECTED: 1990 "C" MODEL

The following figure shows revised diagnostic procedures for no compressor operation. This supersedes the existing procedure found on page 1C-12, Figure 8, Chart 1, no compressor operation.

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.