SMU-SEC.6E. ENG. CONT. REV. PCM OUTPUTS DIAG. TBL.. Pontiac Sunfire 1997

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E - ENGINE CONTROLS - REVISED PCM OUTPUTS DIAGNOSIS TABLE

MODELS: 1996-98 BUICK SKYLARK 1996 BUICK CENTURY 1996 CHEVROLET BERETTA 1996-98 CHEVROLET CAVALIER 1997-98 CHEVROLET MALIBU 1996-98 OLDSMOBILE ACHIEVA 1996 OLDSMOBILE CIERA 1996-98 PONTIAC GRAND AM 1996-98 PONTIAC SUNFIRE 1996-98 TOYOTA CAVALIER

1996-98 CHEVROLET AND GMC S/T MODELS WITH 2.2L, 2.4L ENGINE (VINS 4, T - RPOS LN2 LD9)

THIS BULLETIN REVISES THE PCM OUTPUTS DIAGNOSIS TABLE FOR THE FOLLOWING SERVICE MANUALS:

* 1996 GMP/96/A-2 PAGES 6E-221 - 6E-222 * 1996 GMP/96-J-2 PAGES 6E-271 - 6E-272 AND 6E-651 - 6E-252 * 1996 GMP/96-L-2 PAGES 6E-237 - 6E-238 * 1996 GMP/96-N/2 PAGES 6E-259 - 6E-260 * 1996 GMP/96-ST-2 PAGES 6E-234 - 6E-235 * 1997 GMP/97-L/N-2 PAGES 6E-301 - 6E-302 * 1997 GMP/97-N-2 PAGES 6E-289 - 6E-290 * 1997 GMP/97-J-2 PAGES 6E-302 - 6E-303 AND 6E-798 - 6E-799 * 1997 GMT/97-ST-2 PAGES 6-676 - 6-677 * 1998 GMP/98-L/N-3 PAGES 6-752 - 6-754 * 1998 GMP/98-N-3 PAGES 6-751 - 6-753 * 1998 GMP/98-J-3 PAGES 6-734 - 6-735 AND 6-1157 - 6-1159 * 1998 GMT/98-ST-3 PAGES 6-872 - 6-873

THE FOLLOWING PARAGRAPH SHOULD BE INSERTED INTO THE PCM OUTPUTS DIAGNOSIS CIRCUIT DESCRIPTION:

IN ORDER TO CORRECTLY READ THE SHORT OR OPEN PCM OUTPUT PARAMETERS ON THE SCAN TOOL, THE ODM POSITIONS READ FROM LEFT TO RIGHT: 7, 6, 5, 4, 3, 2, 1, 0. THE ACTUAL PIN-OUT LOCATIONS FOR THE BITS ARE SHOWN ON THE FOLLOWING TABLES:

PLEASE UPDATE YOUR SERVICE MANUAL WITH THESE REVISONS.

FIGURES: 00 ATTACHMENTS: 00

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.