SMU- SECTION 6E3A DRIVEABILITY + EMISS. Oldsmobile Cutlass Supreme 1994

SUBJECT: SERVICE MANUAL UPDATE - SECTION 6E3A - DRIVEABILITY AND EMISSIONS - REVISED DIAGNOSTIC FOR DTC P1650 QUAD DRIVER MODULE (QDM) "B" ERROR 3.4L (VIN X)(SFI), 1994 W CAR

MODELS: 1994 CHEVROLET LUMINA, LUMINA EURO, LUMINA Z34 1994 PONTIAC GRAND PRIX SE 1994 OLDSMOBILE CUTLASS SUPREME WITH 3.4L ENGINE (VIN X - RPO LQ1)

THIS BULLETIN IS BEING ISSUED TO INFORM TECHNICIANS OF A REVISION TO PAGE 3 OF 3 FOR DTC P150 QUAD DRIVER MODULE (QDM) "B" ERROR 3.4L (VIN X)(SFI).

THE FIRST DIAGNOSTIC BOX ON PAGE 3 OF 3 IS IN ERROR. IT READS AS FOLLOWS:

* USE FACING PAGE WIRING DIAGRAM FOR SPECIFIC TERMINALS TO BE TESTED. * RECONNECT PCM, IF APPLICABLE. * KEY "ON", ENGINE "OFF", SELECT FIELD SERVICE MODE WITH TECH 1. * REMOVE CONNECTOR FROM SOLENOID IN AFFECTED CIRCUIT. * CONNECT TEST LIGHT BETWEEN TERMINALS FOR IGNITION FEED AND PCM DRIVER CIRCUIT. * LIGHT SHOULD BE "ON". IS IT?

THERE IS NO FIELD SERVICE MODE CAPABILITY ON THE SCAN TOOL FOR THE 1994 W CAR WITH THE 3.4L (VIN X) ENGINE. SUBSTITUTE THE CURRENT STEPS IN THE FIRST BOX WITH THE FOLLOWING:

* USE FACING PAGE WIRING DIAGRAM FOR SPECIFIC TERMINALS TO BE TESTED. * RECONNECT PCM, IF APPLICABLE. * KEY "ON", ENGINE "OFF", UNDER MISC. TESTS, SELECT TRANSMISSION WITH TECH 1. * DISCONNECT TRANSAXLE CONNECTOR. * CONNECT TEST LIGHT BETWEEN TRANSAXLE HARNESS CONNECTOR TERMINALS FOR IGNITION FEED AND AFFECTED SOLENOID DRIVER CIRCUIT. * TURN AFFECTED SOLENOID "ON" WITH THE TECH 1. * LIGHT SHOULD BE "ON". IS IT?

IN ADDITION TO INSERTING THE NEW INFORMATION FOR THE FIRST DIAGNOSTIC BOX, REMOVE ALL REFERENCES TO "FIELD SERVICE MODE".

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.