Diagnostic Aids

Vehicles equipped Federal emissions have a cancel switch that must be reset after 50,000, 80,000 and 100,000 miles after maintenance service is completed.

NOTE: ON VEHICLE EQUIPPED WITH FEDERAL EMISSIONS. MAKE SURE THAT ODOMETER DOES NOT READ 50,000, 80,000 OR 100,000 MILES. IF IT DOES, PERFORM MAINTENANCE SERVICE BEFORE PROCEEDING.

Fig 1: Chart A-2, Circuit Wiring Diagram

Courtesy of GENERAL MOTORS CORP.

Fig 2: Chart A-2, Flow Chart

Courtesy of GENERAL MOTORS CORP.