POWER DOOR LOCKS CYCLE WHEN BRAKE PEDAL IS DEPRESSED. Pontiac Trans Sport 1995

REVISION: 04/23/96

THIS BULLETIN IS BEING REVISED TO CORRECT THE PARTS INFORMATION (WIRING KIT DESCRIPTION). THIS REVISION IS FOR CD-ROM AND TAS UPDATE ONLY - PAPER COPY OF BULLETIN WILL NOT BE REPRINTED. *********************************************************************

SUBJECT: POWER DOOR LOCKS CYCLE WHEN BRAKE PEDAL IS DEPRESSED (REPLACE PARK/NEUTRAL SWITCH, ADD CONNECTOR KIT)

MODELS: 1995 CHEVROLET LUMINA MINIVAN 1995 PONTIAC TRANS SPORT WITH 3-SPEED TRANSAXLE ONLY AND 3.1L ENGINE (VIN D-RPO LG6)

CONDITION:

SOME OWNERS MAY COMMENT THAT THE POWER DOOR LOCKS CYCLE WHEN THE BRAKE PEDAL IS DEPRESSED. THE CONDITION MAY BE INTERMITTENT AND MAY OCCUR MOST OFTEN AFTER DRIVING THROUGH SALT SPRAY.

CAUSE:

THE PARK/NEUTRAL SWITCH, ON THE 3-SPEED TRANSAXLE ONLY (USED WITH THE 3.1L ENGINE, VIN D) MAY ALLOW WATER TO ENTER, CAUSING AN INTERNAL SHORT. THIS SHORT CAN CAUSE THE AUTOMATIC LOCK FUNCTION TO OPERATE WHEN THE BRAKE SWITCH IS ACTIVATED, RATHER THAN WHEN THE TRANSAXLE IS MOVED INTO REVERSE OR DRIVE, AS DESIGNED.

CORRECTION:

THE ABOVE CONDITION WAS CORRECTED WITH THE USE OF A NEW SWITCH FOR THE 1996 MODEL YEAR. REPLACE THE SWITCH WITH THE NEW 1996 PART NUMBER. THIS WILL ALSO REQUIRE REPLACEMENT OF THE CONNECTOR, TERMINALS, AND SEALS CONTAINED IN A CONNECTOR KIT. THE TERMINALS WILL BE INDEXED DIFFERENTLY THAN THE 1995 SWITCH. SEE THE INSTRUCTIONS BELOW.

INDEXING THE WIRES:

CIRCUIT OLD CAV. NEW CAV. COLOR NO. FUNCTION ======== ======== ===== ======= ========

7A 7A ORN/BLK 434 PARK/NEUTRAL SIGNAL 7B 7D BLK/WHT 451/1050 GROUND 7C 7C LT GRN 275 PARK ACCESSORY 7D 7B PINK 139 IGN. SW. FEED 7E 7F LT GRN 24 BACK-UP LIGHTS 7F 7G YELLOW 5 IGN. CRANK 7G 7E PURPLE 6 STARTER SOL. FEED

SERVICE PROCEDURE:

USE THE FOLLOWING PROCEDURE TO INSTALL THE NEW SWITCH AND CONNECTOR KIT:

1. DISCONNECT THE NEGATIVE BATTERY CABLE. REMOVE THE AIR CLEANER ASSEMBLY FOR ACCESS TO THE SWITCH.

2. DISCONNECT THE PARK/NEUTRAL SWITCH CONNECTOR. REMOVE AND DISCARD THE EXISTING SWITCH. MAKE SURE TO MARK THE ORIGINAL CAVITY NUMBERS ON THE TWO LIGHT GREEN WIRES, SO THAT THEY CAN GO INTO THE CORRECT NEW TERMINAL LOCATIONS. CUT OFF THE OLD CONNECTOR, LEAVING AS MUCH WIRE LENGTH AS POSSIBLE.

3. SLIDE THE SEALS ONTO THE WIRES, THEN INSTALL THE NEW TERMINALS. BE SURE TO PROPERLY CRIMP AND SOLDER THE CONNECTIONS. THE YELLOW AND PURPLE WIRES WILL USE THE LARGE TERMINALS AND SEALS. THE REMAINING WIRES WILL USE THE SMALL TERMINALS AND SEALS.

4. USING THE CHART ABOVE, INSTALL THE WIRES INTO THE CORRECT TERMINALS IN THE NEW CONNECTOR. INSTALL THE SEAL INCLUDED WITH THE CONNECTOR. INSTALL THE NEW TPA.

5. INSTALL THE NEW PARK/NEUTRAL SWITCH ON THE TRANSAXLE, AND ADJUST IF NEEDED, FOLLOWING THE INSTRUCTIONS IN THE SERVICE MANUAL, PAGE 7A-8. INSTALL THE CONNECTOR.

6. RECONNECT THE NEGATIVE BATTERY CABLE, AND REINSTALL THE AIR CLEANER ASSEMBLY. CHECK THE FUNCTION OF THE AUTOMATIC DOOR LOCKS, BACK-UP LAMPS, AND STARTER (NO CRANK IN PARK).

PARTS INFORMATION:

DESCRIPTION PART NUMBER =========== ===========

PARK/NEUTRAL SWITCH 12450003

WIRING KIT - 12167309 CONSISTS OF: CONNECTOR ASM. WITH SEAL TPA SMALL TERMINALS (5) LARGE TERMINALS (2) SMALL SEALS (5) LARGE SEALS (2)

PARTS ARE EXPECTED TO BE AVAILABLE ON MARCH 25, 1996.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OPERATION LABOR NUMBER DESCRIPTION TIME =============== =========== =====

J6383 FOR REPLACEMENT OF USE PUBLISHED SWITCH LABOR TIME.

N6270 FOR REPLACEMENT OF USE PUBLISHED HARNESS LABOR 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.