SERVICE MANUAL UPDATE SEC. 8A RT. SIDE ELECT CENTER REVISION

Subject: SERVICE MANUAL UPDATE - SECTION 8A, RIGHT SIDE ELECTRICAL CENTER DIAGRAM REVISION

Models Affected: 1990 GRAND PRIX MODELS -----------------------------------------------------------------------------

For the 1990 model year two variations of the right side electrical center exist. Early models have no letter/number identifications embossed on the electrical center. Later models have letter/number identifications embossed on the electrical center (See Figure).

The schematics and diagnostics were written assuming that no letter/ number identifications are embossed on later model electrical center, therefore the letter/number identifications embossed on later model electrical centers will not match what is shown on the schematics or diagnostics. When diagnosing the applicable electrical systems, use the letter/number identifications shown in parenthesis (See Figure) .

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.