INFORMATION ON FALSE DTCS 35, 36 AND 37. Chevrolet Chevy K Pickup

SUBJECT: INFORMATION ON FALSE ABS DTCS 35, 36 AND 37

MODELS: 1996 CHEVROLET AND GMC S MODELS WITH 2.2L ENGINE (VIN 4 - RPO LN2)

1996 CHEVROLET AND GMC M/L MODELS 1996 CHEVROLET AND GMC C/K AND G MODELS WITH GASOLINE ENGINES

DURING ROUTINE ABS SYSTEM CHECKS, DTCS 35, 36 AND 37 MAY BE FOUND STORED, BUT NO CUSTOMER COMMENT, ABS LIGHT, OR BRAKE PERFORMANCE PROBLEM IS REPORTED. WHEN A SPECIFIC ROOT CAUSE CANNOT BE IDENTIFIED, VCM/PCM REPLACEMENT IS OFTEN PERFORMED.

IN SOME CASES, THESE DTCS CAN BE STORED IF THE IGNITION SWITCH IS SLOWLY TURNED FROM THE RUN TO OFF POSITION. THIS CONDITION IS NOT LIMITED TO, BUT IS MORE OFTEN SEEN ON MANUAL TRANSMISSION EQUIPPED MODELS.

ASK THE OWNER IF THIS PRACTICE OF SLOWLY TURNING OFF THE IGNITION IS A POSSIBILITY.

TRUCKS WITH DTCS 36 AND 37 STORED, MAY BE MOVING AT LOW SPEED WHEN THE KEY IS SLOWLY TURNED TO THE OFF POSITION.

CLEAR THE DTC(S). NO PART REPLACEMENT IS NECESSARY.

IMPORTANT: IF ANY OF THESE CODES ARE FOUND WITH THE ABS LIGHT ON, PERFORM NORMAL DIAGNOSIS FOLLOWING THE APPLICABLE SERVICE MANUAL PROCEDURE.

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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.