SERVICE MANUAL UPDATE-SEC.1B A/C V-DOT DIAGNOSIS CHARTS

MODELS AFFECTED: 1990 REGAL AND CENTURY

The V-DOT (Variable Displacement Orifice Tube) diagnosis charts have been revised. The following charts should be used when diagnosing the V-DOT System for the following Service Manuals. Please update your service manuals accordingly.

Manuals Affected:

1990 Buick Regal - Section 1B, Pages 1B-9 through 1B-15 1990 Buick Century - Section 1B2, Pages 1B2-8 through 1B2-14

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.