INTERMITTENT DIAGNOSTIC TROUBLE CODE P0107. Chevrolet Cavalier 1996

SUBJECT: INTERMITTENT DIAGNOSTIC TROUBLE CODE P0107 MAP SENSOR CIRCUIT LOW VOLTAGE (PCM FLASH CALIBRATION)

MODELS: 1996 CHEVROLET CAVALIER 1996 PONTIAC SUNFIRE WITH 2.4L ENGINE (VIN T - RPO LD9) AND 4T40-E AUTOMATIC TRANSMISSION (RPO MN4)

CONDITION:

SOME OWNERS OF THE ABOVE LISTED VEHICLES MAY HAVE A REPEATED CONCERN WITH AN INTERMITTENT MIL LAMP ACCOMPANIED BY NO SPECIFIC DRIVEABILITY CONCERNS. THIS CONDITION MAY OCCUR MORE FREQUENTLY IN AREAS THAT ARE MOUNTAINOUS OR AT HIGH ALTITUDE. THE OWNER'S CONCERN WILL BE ACCOMPANIED BY A STORED DTC P0107 MAP SENSOR CIRCUIT VOLTAGE LOW.

CAUSE:

THE CALIBRATION ORIGINALLY INSTALLED IN THESE VEHICLES IS SENSITIVE TO LONG PERIODS OF CLOSED THROTTLE (0% TPS) AT SPEEDS BETWEEN 38 AND 42 MPH (61-68 KM/H). THIS CONDITION USUALLY OCCURS WHEN USING THE ENGINE TO SLOW THE VEHICLE ON LONG DOWNHILL GRADES WITH THE SELECTOR IN DRIVE (D) OR THIRD (3).

CORRECTION:

A NEW CALIBRATION HAS BEEN DEVELOPED TO CORRECT THIS CONDITION, THIS NEW CALIBRATION SHOULD ONLY BE INSTALLED IF THE OWNER STATES A CONCERN WITH THE ABOVE NOTED CONDITIONS. PERFORM THE PCM FLASH CALIBRATION PROCEDURE USING THE NUMBER 22 CD-ROM UPDATE OR A LATER VERSION. CORRECT CALIBRATION INFORMATION IS LISTED IN THE CHART BELOW.

APPLICATIONS BROADCAST PART NUMBER /EMISSIONS CODE + SCAN ID US FED/CANADA CBHY 16255623 CALIFORNIA CBHZ 16255633 EXPORT CBJA 16255643

WARRANTY CLAIM INFORMATION: USE THE LABOR OPERATION LISTED BELOW.

PROCEDURE LABOR OPERATION LABOR HOURS PROM - REPROGRAMMING, J6355 0.4* ON CAR * DIAGNOSIS TIME MAY BE CLAIMED FOR 0.0 TO 0.7 HOURS DEPENDING ON ACTUAL TIME PERFORMING DIAGNOSIS.

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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.