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

MODELS/YEARS 1989 CUTLASS CALAIS - 1990 CUTLASS CALAIS, CUTLASS CIERA, CUTLASS SUPREME AND SILHOUETTE MODELS

The VDOT (Variable Displacement Orifice Tube) diagnosis charts have been revised. The following charts should be used when diagnosing the VDOT System for the following Service Manuals. Models Affected:

1989 Cutlass Calais Section 1 B, Pages 1B-8 through 1B-15 1990 Cutlass Calais Section 1 B, Pages 1B-8 through 1B-15 1990 Cutlass Ciera Section 1 B2, Pages 1B2-8 through 1B2-14 1990 Cutlass Supreme Section 1 B, Pages 1B-9 through 1B-15 1990 Silhouette Section 1 B, Pages 1B-17 through 1B-24

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.