SMU - SECTION 8A-2 ELECTRICAL DIAGNOSIS. Geo Tracker - 4WD 1992

For 1990-2009 cars

# SMU - SECTION 8A-2 ELECTRICAL DIAGNOSIS

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 8A-2 - ELECTRICAL DIAGNOSIS, PIERCING WIRE INSULATION DURING ELECTRICAL SYSTEM DIAGNOSIS

#### MODELS: 1990-94 CHEVROLET AND GMC TRUCK LIGHT AND MEDIUM DUTY MODELS 1991-94 OLDSMOBILE BRAVADAS

THE 1994 AND PRIOR DRIVEABILITY, EMISSIONS + ELECTRICAL DIAGNOSIS MANUALS INCORRECTLY STATE "THE 12-VOLT TEST LAMP GENERALLY HAS A SHARP PROBE TIP SO IT CAN BE INSERTED INTO CONNECTOR TERMINALS OR THROUGH THE WIRE INSULATION FOR TESTING. IT IS IMPORTANT TO KEEP THE PROBE TIP SHARP TO MINIMIZE DAMAGE TO WIRE INSULATION." PLEASE DISREGARD THIS STATEMENT.

DO NOT PIERCE WIRE INSULATION WHEN PERFORMING ELECTRICAL SYSTEM DIAGNOSIS BECAUSE IT WILL DAMAGE THE WIRING HARNESS. ALWAYS USE KENT-MOORE CONNECTOR TEST ADAPTER KIT J 35616-A WHEN TESTING OR TAKING MEASUREMENTS OF ELECTRICAL SYSTEMS AND COMPONENTS.

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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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.