For 1990-2009 cars

# TEMPERATURE GAUGE READS TOO HIGH (INSTALL RESISTOR)

#### SUBJECT: TEMPERATURE GAUGE READS TOO HIGH (INSTALL RESISTOR)

#### MODELS: 1993-94 CHEVROLET CAMARO - PRIOR TO VIN R2173167 1993-94 PONTIAC FIREBIRD - PRIOR TO VIN R2229373

#### CONDITION:

THE CUSTOMER MAY COMMENT THAT THE TEMPERATURE GAUGE READS TOO HIGH, THAT THE NEEDLE IS IN THE RED ZONE, OR THAT THE ENGINE IS OVERHEATING.

#### CAUSE:

THE CALIBRATION OF THE TEMPERATURE GAUGE IN THE CLUSTER IS INCORRECT. THE CLUSTERS WERE CORRECTED IN PRODUCTION AFTER VIN R2173167 (CHEVROLET) AND R2229373 (PONTIAC).

#### CORRECTION:

1. VERIFY THAT THE CONDITION EXISTS BY COMPARING THE CLUSTER GAUGE READING WITH THE READING FROM THE ECM TEMPERATURE SENSOR, USING THE TECH 1. THE 3/4 MARK ON THE GAUGE IS ABOUT 235 DEGREES FAHRENHEIT (113 DEGREES CELSIUS).

2. DISCONNECT THE TEMPERATURE GAUGE SENSOR CONNECTOR. THE SENSOR IS SHOWN IN THE 1994 SERVICE MANUAL, PAGE 8A-201-27, FIGURE 52 (V-6), AND PAGE 8A-201-16, FIGURE 29 (V-8).

CUT THE DARK GREEN WIRE, AND SPLICE IN A 10 OHM, 1/2 WATT RESISTOR. SOLDER THE CONNECTIONS, AND PROTECT WITH SHRINK WRAP TO INSURE THAT THE CONNECTION IS WATERPROOF. THE RESISTOR CAN BE OBTAINED FROM A LOCAL ELECTRONICS SUPPLY STORE. ONE SUCH SOURCE IS RADIO SHACK, P/N 271-001 OR EQUIVALENT.

RECONNECT THE TEMPERATURE GAUGE SENSOR CONNECTOR.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: N6270 USE PUBLISHED LABOR OPERATION TIME.

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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.