AUTO-DOOR LOCK AT KEY OFF AND/ OR REMOTE KEYLESS ENTRY. Cadillac Eldorado 1994

SUBJECT: AUTOMATIC DOOR LOCK AT KEY OFF AND/OR REMOTE KEYLESS ENTRY (RKE) SYSTEM FUNCTIONS OPERATING INCORRECTLY (REPLACE RKE MODULE)

MODELS: 1993-95 CADILLAC ELDORADO, SEVILLE 1994-95 CADILLAC CONCOURS, DEVILLE

CONDITION:

OWNERS MAY COMMENT THAT SOME REMOTE KEYLESS ENTRY (RKE) SYSTEM FUNCTIONS MAY NOT OPERATE CORRECTLY.

THREE CONDITIONS MAY OCCUR:

1. AUTOMATIC DOORS LOCK WHEN IGNITION SWITCH IS TURNED TO THE "OFF" POSITION.

2. TRUNK LID LATCH UNLOCKS WHEN IT SHOULD NOT.

3. RKE TRANSMITTER DOES NOT ACTIVATE THE DOOR LOCKS, ILLUMINATED ENTRY OR TRUNK LID LATCH.

VEHICLES AFFECTED:

CONDITION #1:

NOTE: THIS BULLETIN ALSO APPLIES TO EARLIER 1994 VEHICLES AND TO 1993 ELDORADOS AND SEVILLES THAT HAVE HAD THE FUEL PUMP REPLACED.

1994 CONCOURS, DEVILLE - 286105 TO EOP 1994 ELDORADO - 619245 TO EOP 1994 SEVILLE - 836054 TO EOP 1995 CONCOURS AND DEVILLE - SOP TO 221304 1995 ELDORADO - SOP TO 604176 1995 SEVILLE - SOP TO 806148

CONDITIONS #2 + #3:

1993-94 CADILLAC ELDORADO, SEVILLE - ALL 1994 CADILLAC CONCOURS, DEVILLE - ALL 1995 CONCOURS, DEVILLE - SOP TO 261820 1995 ELDORADO - SOP TO 612222 1995 SEVILLE - SOP TO 818910

CAUSE:

CONDITION #1:

THE FUEL PUMP CURRENTLY INSTALLED ON THE VEHICLES LISTED ABOVE MAY GENERATE ELECTRICAL TRANSIENTS WHICH INTERFERE WITH PROPER OPERATION OF THE REMOTE KEYLESS ENTRY (RKE) MODULE. THE RKE MODULE MAY RESPOND TO CAUSE ONE OR MORE OF THE CONDITIONS STATED ABOVE.

CONDITIONS #2 AND #3:

OUTSIDE NOISE INTERFERENCE NEAR THE FREQUENCY OF THE RKE TRANSMITTER (KEY FOB) TO RECEIVER (RKE MODULE) SIGNAL MAY CAUSE THESE CONDITIONS. SOFTWARE IN THE RKE RECEIVER INTERPRETED THE NOISE AS DATA, ALLOWING THE POSSIBILITY OF CONDITION #2 AND/OR #3 TO OCCUR. AN UPDATE TO THE SOFTWARE ELIMINATED THE UNWANTED CONDITIONS.

CORRECTION:

TO REPAIR THE ABOVE CONDITIONS, REPLACE THE RKE MODULE WITH THE FOLLOWING:

RKE MODULE (DOMESTIC*) - P/N 16215349 (WITH DATE CODE 05 OR LATER) RKE MODULE (EXPORT) - P/N 16215399

(*INCLUDES CANADA)

THE RKE MODULE DATE CODE IS THE LEFT-MOST TWO DIGITS OF THE NUMBER ON THE MODULE CONNECTOR.

FOLLOW THE MODULE REPLACEMENT PROCEDURE PROVIDED IN SECTION 9K OF THE 1994 SERVICE MANUAL. REFER TO ON-VEHICLE SERVICE PARAGRAPH.

NOTE: IN 1995 MODEL YEAR, INITIAL PRODUCTION OF NEW RKE MODULE, P/N 16215349, DID NOT HAVE THE UPDATED SOFTWARE DESCRIBED ABOVE. FOR THOSE VEHICLES, REPLACE RKE MODULE, P/N 16215349, WITH SERVICE PART RKE MODULE, P/N 16215349, HAVING DATE CODE 05 OR LATER. THE VIN BREAKPOINTS FOR VEHICLES WITH THE NEW RKE MODULE BUT OLD SOFTWARE IN THE MODULE ARE AS FOLLOWS:

1995 CONCOURS, DEVILLE - 221304 TO 261820 1995 ELDORADO - 604176 TO 612222 1995 SEVILLE - 806148 TO 818910

PARTS AVAILABILITY:

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION NUMBER: R4480 USE PUBLISHED LABOR OPERATION TIME.

FIGURES: 0

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.