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HOMESERVICE MANUALSBUICK1996CENTURY SEDAN L4-2.2L VIN 4REPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSENGINE CONTROLS - REVISED PCM OUTPUTS DIAGNOSTIC TABLE
1996 Buick Century Sedan L4-2.2L VIN 4
Engine Controls - Revised PCM Outputs Diagnostic Table
1996 Buick Century Sedan L4-2.2L VIN 4SECTION Engine Controls - Revised PCM Outputs Diagnostic Table
File In Section: 6E - Engine Fuel & Emission
Bulletin No.: 71-65-64
Date: October, 1997
SERVICE MANUAL UPDATE
Subject:
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 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 GMPl98-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 0DM positions read from left to right: 7, 6, 5, 4, 3, 2, 1, 0. The actual pin-out locations for the 0DM parameters are shown on the following tables:
Please update your service manual with these revisions.
Bulletin No.: 71-65-64
Date: October, 1997
SERVICE MANUAL UPDATE
Subject:
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 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 GMPl98-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 0DM positions read from left to right: 7, 6, 5, 4, 3, 2, 1, 0. The actual pin-out locations for the 0DM parameters are shown on the following tables:
Please update your service manual with these revisions.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.