DOORS WILL NOT UNLOCK/ TRUNK WILL NOT OPEN. Cadillac Concours 1997

SUBJECT: DOORS WILL NOT UNLOCK/TRUNK WILL NOT OPEN ON FIRST PRESS OF REMOTE FUNCTION ACTUATOR (RFA) BUTTON (INSTALL NEW BODY CONTROL MODULE)

MODELS: 1997 CADILLAC CONCOURS, DEVILLE, ELDORADO, SEVILLE

BUILT PRIOR TO THE FOLLOWING VIN BREAKPOINTS:

CONCOURS/DEVILLE - VU212778 ELDORADO - VU602831 SEVILLE - VU805094

CONDITION:

SOME OWNERS MAY COMMENT THAT AFTER THEIR VEHICLE SITS FOR HALF AN HOUR (KEY OUT OF IGNITION, DELAYED ACCESSORY BUSS OFF AND DOORS CLOSED), THE REMOTE FUNCTION ACTUATOR (RFA) MAY NOT WORK ON THE FIRST BUTTON PRESS. IF THE KEY IS USED TO MANUALLY UNLOCK THE DOOR, THE CONTENT THEFT ALARM MAY GO OFF ONCE THE DOOR IS OPENED OR WHEN THE CAR IS STARTED.

CAUSE:

SOME BODY CONTROL MODULES (PZM'S) MAY NOT WAKE UP PROPERLY DUE TO A MISSING PULL UP RESISTOR AND WILL MISS THE RFA MESSAGE TO UNLOCK THE DOORS/OPEN THE TRUNK.

CORRECTION:

TO CONFIRM -

PERFORM THE FOLLOWING TO VERIFY THAT THE PZM IS THE CAUSE OF THE VEHICLE'S CONDITION.

1. CONFIRM THAT THE VIN IS PRIOR TO THE BREAKPOINT.

2. KEY TO RUN, ROLL DOWN WINDOW AND CONNECT TECH 2 SO THAT IT IS OUTSIDE OF THE VEHICLE.

3. KEY TO OFF AND OPEN/CLOSE DOOR TO CANCEL RETAINED ACCESSORY POWER (RAP).

4. ON TECH 2, SELECT:

O DIAGNOSTICS O 1997 O PASSENGER CAR O OBD SYSTEM CHECK O CLASS 2 MESSAGE MONITOR

5. PRESS THE RFA LOCK BUTTON - SCROLL DISPLAY TO MAKE SURE BOTH THE PZM AND RFA ARE ON THE TECH 2 SCREEN.

6. WAIT 25-30 MINUTES.

7. WHILE LOOKING AT THE TECH 2, PRESS THE UNLOCK BUTTON ON THE TRANSMITTER TWICE.

O IF THE RFA BECOMES ACTIVE, BUT THE PZM STAYS INACTIVE - REPLACE THE PZM. O IF THE RFA DOES NOT BECOME ACTIVE - DIAGNOSE RFA CONCERN. O IF THE RFA AND PZM BECOME ACTIVE, BUT THE DOORS DO NOT UNLOCK - DIAGNOSE THE DOOR SYSTEM CONCERN.

TO CORRECT -

INSTALL UPDATED BODY CONTROL MODULE (PZM) USING THE FOLLOWING PROCEDURE.

REMOVE OR DISCONNECT:

1. COMFORT FUSE FROM THE TRUNK COMPARTMENT FUSE BLOCK.

2. REAR SEAT CUSHION AND SEAT BACK.

3. INSPECT BODY CONTROL MODULE (PZM).

- IF SERVICE PART NUMBER IS 16246879 OR 16258669, THE PZM HAS ALREADY BEEN UPDATED FOR THIS CONDITION AND SHOULD NOT BE GAINING TIME; RECONFIRM CONDITION WITH OWNER BEFORE REMOVING PART.

INSTALL OR CONNECT:

1. BODY CONTROL MODULE (PZM).

2. REAR SEAT AND SEAT CUSHION.

3. COMFORT FUSE IN TRUNK COMPARTMENT FUSE BLOCK.

PARTS INFORMATION:

DESCRIPTION P/N =========== ===

BODY CONTROL MODULE (PZM) 16258669

PARTS ARE EXPECTED TO BE AVAILABLE APRIL 14, 1997.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: N4800 USE PUBLISHED LABOR OPERATION TIME.

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.