CLOCK MALFUNCTION - RADIO CLOCK STUCK ON 12:00. Cadillac Concours 1996

For 1990-2009 cars

# CLOCK MALFUNCTION - RADIO CLOCK STUCK ON 12:00

#### SUBJECT: CLOCK MALFUNCTION - RADIO CLOCK STUCK ON 12:00 AND CANNOT BE CHANGED (REPLACE BODY CONTROL MODULE)

#### MODELS: 1996 CADILLAC CONCOURS, DEVILLE, ELDORADO, SEVILLE

BUILT PRIOR TO MODEL VIN BREAKPOINT ===== ==============

CONCOURS TU202032 DEVILLE TU202019 ELDORADO TU600446 ELDORADO TOURING TU600447 SEVILLE TU800694 SEVILLE TOURING TU800695

#### CONDITION:

SOME OWNERS MAY COMMENT ON THE RADIO CLOCK BEING STUCK ON 12:00 AND CANNOT BE CHANGED.

#### CAUSE:

THIS CONDITION MAY RESULT FROM A FLUCTUATION OF SYSTEM VOLTAGE TO THE BODY CONTROL MODULE (PZM).

#### CORRECTION:

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

REMOVE OR DISCONNECT -

1. "COMFORT" FUSE B9 FROM TRUNK COMPARTMENT FUSE BLOCK.

2. REAR SEAT CUSHION.

3. REAR SEAT BACK.

4. BODY CONTROL MODULE (PZM) FROM VEHICLE.

5. MEMCAL FROM PZM.

INSTALL OR CONNECT -

1. MEMCAL IN NEW PZM.

2. PZM IN VEHICLE.

3. REAR SEAT BACK.

4. REAR SEAT CUSHION.

5. "COMFORT" FUSE B9 IN TRUNK COMPARTMENT FUSE BLOCK.

6. REPROGRAM PZM OVERRIDE PZS33 ACCORDING TO THE FOLLOWING VALUES:

E = 6 = ELDORADO K = 4 = SEVILLE KSP = 5 = DEVILLE/CONCOURS

7. HOLD THE FRONT "DEFROST" AND "AUTO/ECON" ("A/C" FOR ANALOG IPC) FOR APPROXIMATELY 5 SECONDS UNTIL THE DISPLAY FLASHES.

8. CYCLE IGNITION.

#### PARTS INFORMATION:

BODY CONTROL MODULE (PZM) P/N 16233374

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: T2720 LABOR TIME: .6 HR

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.

COPYRIGHT 1995 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.