SMU - SECTION 5E1/5E2 - REVISED DIAGNOSTIC CHARTS. Chevrolet Cavalier 1995

REVISION: 04/11/96

THIS BULLETIN IS BEING REVISED TO CORRECT THE CKT REFERENCE FOR CKT 855 TO CKT 855/1633 IN BOTH THE TEXT AND ATTACHED CHARTS. PLEASE DISCARD CORPORATE BULLETIN NUMBER 53-50-19 (SECTION 5 - BRAKES). *********************************************************************

SUBJECT: SERVICE MANUAL UPDATE - SECTION 5E1/5E2 - REVISED DIAGNOSTIC CHARTS FOR ABS AND ABS WITH ENHANCED TRACTION SYSTEM

MODELS: 1995 CHEVROLET CAVALIER 1995 PONTIAC SUNFIRE

********************************************************************** THIS BULLETIN IS BEING REVISED TO CORRECT THE CKT REFERENCE FOR CKT 855 TO CKT 855/1633 IN BOTH THE TEXT AND ATTACHED CHARTS. PLEASE DISCARD CORPORATE BULLETIN NUMBER 53-50-19 (SECTION 5 - BRAKES). *********************************************************************

THIS BULLETIN REVISES DIAGNOSTIC CHARTS USED WITH THE DIAGNOSTIC TROUBLE CODES (DTC'S) LISTED BELOW. PLEASE UPDATE SECTIONS 5E1 AND 5E2 OF THE SERVICE MANUAL ACCORDINGLY.

- THE DIAGNOSTIC CHARTS USED WITH DTC'S 67, 68, 71 AND 72 (PAGES 5E1- 153, 5E1-155, 5E1-157, 5E1-159, 5E2-161, 5E2-163, 5E2-165 AND 5E2- 167) REFER TO THE INCORRECT CIRCUIT NUMBER TO REPAIR WHEN REFERRING TO THE EMB BATTERY FEED CIRCUIT (CKT 855/1633). THE CURRENT DIAGNOSTIC CHART REFERS TO CKT 850, THE CORRECT CIRCUIT NUMBER IS CKT 855. THE ATTACHED DIAGNOSTIC CHARTS REFLECT THIS CHANGE (ATTACHMENTS A - D, SECTION 5E1 AND ATTACHMENTS E - H, SECTION 5E2) AND SHOULD BE USED WHEN REPAIRING THE ABOVE DTC'S.

- THE DIAGNOSTIC CHARTS USED WITH DTC'S 47 (PAGE 2 OF 2), 48 (PAGE 2 OF 2) AND 51 (PAGE 2 OF 2) IN SECTIONS 5E1 AND 5E2 REFER TO THE INCORRECT NUMBER OF TURNS NEEDED TO DETERMINE A DAMAGED ABS VI HYDRAULIC MODULATOR. THIS IS WITHIN STEP 10 ON THE DIAGNOSTIC CHART. THE DIAGNOSTIC CHART FOR DTC'S 47 AND 48 CURRENTLY READS "AT LEAST 8.5 FULL TURNS". THE CHART SHOULD READ "MORE THAN 9 TURNS". THE DIAGNOSTIC CHART FOR DTC 51 CURRENTLY READS "AT LEAST 3.5 FULL TURNS". THE CHART SHOULD READ "MORE THAN 4 TURNS". THE ATTACHED DIAGNOSTIC CHARTS REFLECT THESE CHANGES (ATTACHMENTS I, J, K) AND SHOULD BE USED WHEN REPAIRING THE ABOVE DTC'S.

FIGURES: 00 ATTACHMENTS: 11

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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.