SMU - SECTION 8A - REVISED ELECTRICAL DIAGNOSIS. Chevrolet Cavalier 1994

SUBJECT: SERVICE MANUAL UPDATE - SECTION 8A - REVISED ELECTRICAL DIAGNOSIS, CHECK GAGES TELLTALE DIAGNOSTICS FOR BASE CLUSTER (UH7)

MODELS: 1994 CHEVROLET CAVALIER

THE FOLLOWING CHANGES SHOULD BE MADE TO SECTION 8A OF THE SERVICE MANUAL:

REVISION PAGE ZONE CATEGORY REVISION ==== ==== ======== ========

8A-80-6 C,D REVISED FOR THE ACTION - TURN IGNITION SWITCH TO RUN, ADD THE FOLLOWING: NORMAL RESULT - CHECK GAGES INDICATOR LIGHTS, AND FOR DIAGNOSIS - SEE SYMPTOM TABLE

8A-80-7 A,B REVISED ADD THE FOLLOWING TO THE SYMPTOM TABLE: SYMPTOM - CHECK GAGES INDICATOR IS LIT WITH GAGES IN NORMAL RANGE, AND FOR DIAGNOSIS - REPLACE OR EXCHANGE THE INSTRUMENT CLUSTER (SEE SECTION 8C)

8A-80-14 B REVISED ADD THE FOLLOWING CIRCUIT DESCRIPTION: CHECK GAGES INDICATOR - THE CHECK GAGES INDICATOR IS CONTROLLED BY A SOLID STATE INDICATOR CONTROL UNIT. INPUTS ARE RECEIVED FROM THE COOLANT TEMPERATURE SENDER/ SENSOR, OIL PRESSURE SENDER, AND FUEL GAGE SENDER. WHEN ANY OF THESE SENDER RESISTANCES CHANGE TO THE POINT WHERE ITS GAGE INDICATES A WARNING CONDITION, THE CHECK GAGES BUFFER TURNS ON THE INDICATOR.

PLEASE MAKE THESE CHANGES ACCORDINGLY.

FIGURES: 0

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.