For 1990-2009 cars

# SMU - SECTION 8A-20 REVISED SYSTEM SCHEMATICS & ECM CONN.

REVISED: 11/08/94

THIS BULLETIN IS BEING REVISED TO UPDATE SCHEMATICS (REVISE PAGE 8, ADD PAGE 9) AND ADD COMPONENT LOCATION LIST ITEMS. PLEASE DISCARD BULLETIN 438111 (GROUP REFERENCE 8 - CHASSIS/BODY ELECTRICAL). ----------------------------------------------------------------------

#### SUBJECT: SERVICE MANUAL UPDATE - SECTION 8A - REVISED SYSTEM SCHEMATICS, PCM CONNECTOR INFORMATION AND COMPONENT LOCATION LIST

#### MODELS: 1994 OLDSMOBILE NINETY EIGHT AND EIGHTY EIGHT 1994 PONTIAC BONNEVILLE

THIS BULLETIN UPDATES SYSTEM SCHEMATICS, PCM CONNECTOR INFORMATION AND COMPONENT LOCATION LIST IN SECTION 8A-20 OF THE APPROPRIATE SERVICE MANUAL.

THE FOLLOWING PAGES ARE AFFECTED.

- PAGES 2, 8, 9 AND 10 (SCHEMATICS).

- PAGES 12, 13 AND 14 (PCM CONNECTOR INFORMATION).

PLEASE SEE THE FOLLOWING ATTACHMENTS FOR THE REVISED INFORMATION.

ALSO, ON PAGE 16, ADD THE FOLLOWING ITEMS TO THE COMPONENT LOCATION LIST:

S900.........................COMPOSITE HARNESS, NEAR I/P CLUSTER S901.........................COMPOSITE HARNESS, NEAR I/P CLUSTER S902.........................COMPOSITE HARNESS, NEAR C260 S903.........................COMPOSITE HARNESS, NEAR HVAC PROGRAMMER

FIGURES: 0 ATTACHMENTS: 7

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.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.