SERVICE MANUAL UPDATE SEC.8A HEATED WINDSHIELD DIAG.

SUBJECT: ELECTRICAL SYSTEMS MANUAL UPDATE (ESM) - SECTION 8A - ELECTRICAL DIAGNOSIS - WINDSHIELD TEST

VEHICLES AFFECTED: 1991 "C" MODELS

The A: WINDSHIELD TEST in Heated Windshield of the 1991 Park Avenue/Park Avenue Ultra Electrical Systems Manual (page 167), is missing a ground, which could lead to misdiagnosis. The illustration below contains the corrected ground location.

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.