CAMPAIGN: TRANSMISSION NEUTRAL START SWITCH WIRING HARNESS
SUBJECT: TRANSMISSION NEUTRAL START SWITCH WIRING HARNESS ABRASION
MODELS AFFECTED: 1988 BUICK REGAL
CONDITION
GENERAL MOTORS HAS DETERMINED THAT SOME 1988 BUICK REGAL'S MAY HAVE THE NEUTRAL START SWITCH WIRING HARNESS ROUTED TOO CLOSE TO THE HYDRAULIC BRAKE LINES. IF THEY COME INTO CONTACT, A RUBBING CONDITION COULD RESULT CREATING AN EVENTUAL SHORT CIRCUIT TO GROUND. A SHORT CIRCUIT CAN CAUSE STARTER MOTOR RUN-ON OR A BLOWN FUSE. BOTH OF THESE CONDITIONS COULD LEAD TO A "NO-START" CONDITION.
DEALER ACTION
TO PREVENT THIS CONDITION FROM OCCURRING, THE NEUTRAL START SWITCH WIRING HARNESS WILL BE INSPECTED AND REPAIRED, OR REPLACEMENT OF THE NEUTRAL START SWITCH WILL BE MADE WHEN NECESSARY.
VEHICLES INVOLVED
INVOLVED ARE CERTAIN 1988 BUICK REGAL MODELS PRODUCED WITHIN THE FOLLOW ING VIN BREAKPOINTS:
PLANT FROM THROUGH AND INCLUDING
OSHAWA J1400064 J1404825
DEALER MATERIAL
IF YOUR DEALERSHIP HAS VEHICLES INVOLVED IN THIS CAMPAIGN, YOU WILL RECEIVE THE FOLLOWING ITEMS:
- LIST OF ALL VEHICLES INVOLVED IN THIS CAMPAIGN SHIPPED TO YOUR DEALERSHIP.
- ONE (1) CAMPAIGN IDENTIFICATION LABEL PER VEHICLE INVOLVED.
INVOLVED VEHICLES HAVE BEEN IDENTIFIED BY VEHICLE IDENTIFICATION NUMBER COMPUTER LISTINGS. COMPUTER LISTINGS CONTAIN THE COMPLETE VEHICLE IDENTIFICATION NUMBER, OWNER NAME AND ADDRESS DATA, AND ARE FURNISHED TO INVOLVED DEALERS WITH THE CAMPAIGN BULLETIN. OWNER NAME AND ADDRESS DATA FURNISHED WILL ENABLE DEALERS TO FOLLOW UP WITH OWNERS INVOLVED IN THIS CAMPAIGN.
THESE LISTINGS MAY CONTAIN OWNER NAMES AND ADDRESSES OBTAINED FROM STATE MOTOR VEHICLE REGISTRATION RECORDS. THE USE OF SUCH MOTOR VEHICLE REGISTRATION DATA FOR ANY OTHER PURPOSE IS A VIOLATION OF LAW IN SEVERAL STATES. ACCORDINGLY, YOU ARE URGED TO LIMIT THE USE OF THIS LISTING TO THE FOLLOW UP NECESSARY TO COMPLETE THIS CAMPAIGN. ANY DEALER NOT RECEIVING A COMPUTER LISTING WITH THE CAMPAIGN BULLETIN HAS NO INVOLVED VEHICLES CURRENTLY ASSIGNED.
OWNER NOTIFICATION
OWNERS WILL BE NOTIFIED OF THIS CAMPAIGN ON THEIR VEHICLES BY BUICK MOTOR DIVISION (SEE COPY OF OWNER LETTER INCLUDED WITH THIS BULLETIN).
DEALER CAMPAIGN RESPONSIBILITY
DEALERS ARE TO SERVICE ALL VEHICLES SUBJECT TO THIS CAMPAIGN AT NO CHARGE TO OWNERS, REGARDLESS OF MILEAGE, AGE OF VEHICLE, OR OWNERSHIP, FROM THIS TIME FORWARD.
WHENEVER A VEHICLE SUBJECT TO THIS CAMPAIGN IS TAKEN INTO YOUR NEW OR USED VEHICLE INVENTORY, OR IT IS IN YOUR DEALERSHIP FOR SERVICE IN THE FUTURE, YOU SHOULD TAKE THE STEPS NECESSARY TO BE SURE THE CAMPAIGN CORRECTION HAS BEEN MADE BEFORE RESELLING OR RELEASING THE VEHICLE.
OWNERS OF VEHICLES RECENTLY SOLD FROM YOUR NEW VEHICLE INVENTORY ARE TO BE CONTACTED BY THE DEALER, AND ARRANGEMENTS MADE TO MAKE THE REQUIRED CORRECTION ACCORDING TO INSTRUCTIONS CONTAINED IN THIS BULLETIN.
PARTS INFORMATION
PARTS REQUIRED TO COMPLETE THIS CAMPAIGN ARE TO BE OBTAINED FROM GENERAL MOTORS SERVICE PARTS OPERATIONS (GMSPO). TO ENSURE THESE PARTS WILL BE OBTAINED AS SOON AS POSSIBLE, THEY SHOULD BE ORDERED FROM GMSPO ON A "C.I.O." ORDER WITH NO SPECIAL INSTRUCTION CODE, BUT ON AN ADVISE CODE (2).
PART NUMBER DESCRIPTION QUANTITY/VEHICLE
12084232 WIRING HARNESS CLAMP 1
1994287 *NEUTRAL START SWITCH (W/O UB3 GAGES) 1 (AS REQ.)
1994285 *NEUTRAL START SWITCH (W/UB3 GAGES) 1 (AS REQ.)
* IT IS ESTIMATED THAT ONLY 10% OF THE VEHICLES INVOLVED WILL REQUIRE REPLACEMENT OF THE NEUTRAL START SWITCH (2% REQUIRING PART NUMBER 1994285, AND 8% REQUIRING PART NUMBER 1994287). ORDER PARTS ACCORDINGLY, BASED ON THE ATTACHED VEHICLE LISTING. VEHICLES WITH UB3 INSTRUMENTATION ARE IDENTIFIED ON THE DEALER LISTINGS.
SERVICE PROCEDURE
SECTION A - INSPECTION
1. PLACE SHIFT INDICATOR IN NEUTRAL.
2. DISCONNECT NEGATIVE BATTERY CABLE.
3. RAISE VEHICLE.
4. INSPECT SWITCH WIRING (SEE FIGURE 1) AND ENGINE HARNESS WIRING (SEE FIGURE 2). IF SWITCH WIRING IS WORN, REFER TO SECTION B - NEUTRAL START SWITCH REPLACEMENT FOR REPAIR PROCEDURE. IF ENGINE HARNESS WIRING IS WORN, REFER TO SECTION C - ENGINE HARNESS WIRING REPAIR FOR APPROPRIATE PROCEDURE. IF NO WEAR IS OBSERVED, PROCEED TO STEP 5.
5. LOWER VEHICLE.
6. INSTALL WIRING HARNESS CLAMP (PART NUMBER 12084232) AROUND THE NEUTRAL SAFETY SWITCH HARNESS. USE THE EXISTING BOLT FROM THE SHIFT CABLE BRACKET TO ATTACH THE CLAMP (SEE FIGURE 2).
7. INSPECT WIRE ROUTING AND VERIFY NONE OF THE WIRES ARE IN CONTACT WITH METAL SURFACES.
8. RECONNECT BATTERY.
9. INSTALL CAMPAIGN IDENTIFICATION LABEL.
SECTION B - NEUTRAL START SWITCH REPLACEMENT
REMOVAL
1. DISCONNECT ELECTRICAL CONNECTOR POSITION ASSURANCE (CPA) AND CONNECTOR.
2. IF ENGINE WIRING HARNESS IS ALSO WORN, REPAIR PER SECTION C THEN CONTINUE WITH STEPS BELOW.
3. REMOVE SWITCH HARNESS FROM TWO (2) RETENTION CLIPS.
4. LOWER VEHICLE.
5. DISCONNECT VACUUM LINES AND ELECTRICAL CONNECTOR AT CRUISE CONTROL SERVO (IF EQUIPPED).
6. REMOVE SERVO AND SET ON COWL - THREE (3) NUTS.
7. REMOVE SHIFT LINKAGE AT TRANSMISSION - ONE (1) NUT. NOTICE: DO NOT DISCONNECT LEVER FROM CABLE.
8. REMOVE SWITCH - TWO (2) BOLTS.
INSTALLATION AND ADJUSTMENT
1. ALIGN NOTCH (GROOVE ON INNER SLEEVE OF SWITCH) WITH NOTCH (GROOVE) ON SWITCH BODY.
2. INSTALL SWITCH AND TORQUE BOLTS 25 N.M (18 LBS. FT.).
3. INSTALL SHIFT LINKAGE AND TORQUE NUT 20 N.M (15 LBS. FT.).
4. RAISE VEHICLE.
5. RECONNECT SWITCH CONNECTOR AND INSTALL CPA.
6. RECONNECT HARNESS RETENTION CLIPS.
7. LOWER VEHICLE.
8. INSTALL WIRING HARNESS CLAMP (PART NUMBER 12084232) AROUND THE NEUTRAL START SWITCH HARNESS. USE THE EXISTING BOLT FROM THE SHIFT CABLE BRACKET TO ATTACH THE CLAMP (SEE FIGURE 2).
9. INSPECT WIRE ROUTING AND VERIFY NONE OF THE WIRES ARE IN CONTACT WITH METAL SURFACES.
10. INSTALL CRUISE CONTROL SERVO AND TORQUE NUTS 3.5 N.M (31 LBS. IN.).
11. RECONNECT VACUUM LINES AND ELECTRICAL CONNECTOR AT SERVO.
12. RECONNECT BATTERY.
13. NOTICE: AFTER SWITCH INSTALLATION, VERIFY THAT ENGINE WILL ONLY START IN "PARK" OR "NEUTRAL". IF ENGINE WILL START IN ANY OTHER POSITION, READJUST SWITCH USING "REPLACEMENT - OLD SWITCH" PROCEDURE INDICATED IN THE 1988 REGAL SERVICE MANUAL.
14. INSTALL CAMPAIGN IDENTIFICATION LABEL.
SECTION C - ENGINE HARNESS WIRING REPAIR
1. DISCONNECT ELECTRICAL CONNECTOR POSITION ASSURANCE (CPA) AND CONNECTOR.
2. OBTAIN SOME 3M BRAND ELECTRICAL MOISTURE SEALANT (3M PART 06147 - ROLL OR 06149 - PADS) OR SIMILAR SEALANT TAPE.
3. APPLY THE SEALANT TAPE TO THE WORN AREA WITH THE STICKY SIDE ON THE CABLE INSULATION.
4. WRAP THE TAPE AROUND THE WORN AREA AND THE CABLE.
5. APPLY PRESSURE TO ANY OVERLAPPING AREA WITH A PAIR OF PLIERS OR SOME OTHER BLUNT INSTRUMENT.
6. IF ENGINE WIRING HARNESS REPAIR IS ALL THAT IS REQUIRED, COMPLETE CAMPAIGN STARTING AT STEP 5 OF SECTION A - INSPECTION. IF NEUTRAL START SWITCH REPLACEMENT IS STILL REQUIRED, RETURN TO SECTION B - NEUTRAL START SWITCH REPLACEMENT - STEP 3.
CAMPAIGN IDENTIFICATION LABEL
EACH VEHICLE CORRECTED IN ACCORDANCE WITH THE INSTRUCTIONS OUTLINED IN THIS BULLETIN WILL REQUIRE A "CAMPAIGN IDENTIFICATION LABEL". EACH LABEL PROVIDES A SPACE TO INCLUDE THE FIVE (5) DIGIT DEALER CODE OF THE DEALER PERFORMING THE CAMPAIGN SERVICE. THIS INFORMATION MAY BE INSERTED WITH A TYPEWRITER OR A BALLPOINT PEN.
EACH "CAMPAIGN IDENTIFICATION LABEL" IS TO BE LOCATED ON THE RADIATOR CORE SUPPORT IN AN AREA WHICH WILL BE VISIBLE WHEN THE VEHICLE IS BROUGHT IN FOR PERIODIC SERVICING BY THE OWNER.
APPLY "CAMPAIGN IDENTIFICATION LABEL" ONLY ON A CLEAN, DRY SURFACE.
DISPOSITION OF PARTS
REPLACED PARTS MUST BE HELD FOR DISPOSITION BY BUICK ZONE OR BRANCH CONTACT PERSONNEL. PARTS MUST HAVE A CLAIM TAG ATTACHED SHOWING THE REPAIR ORDER AND THE VIN OF THE VEHICLE FROM WHICH THEY WERE REMOVED.
WARRANTY INFORMATION
LIST ONE APPLICABLE LABOR OPERATION.
SUBLET*** PART FAILED PARTS FAILURE LABOR LABOR OTHER DEALER OPER COUNT PART NO ALLOW CODE OP NO HOURS HOURS MTL TWG
- INSPECT SWITCH AND ENGINE HARNESS WIRING AND INSTALL WIRING HARNESS CLAMP 1 12084232 ** 96 V4600 0.5 *0.1 --
- INSPECT SWITCH AND ENGINE HARNESS, INSTALL CLAMP AND REPAIR ENGINE HARNESS 1 12084232 ** 96 V4601 0.6 *0.1 $0.42
- INSPECT SWITCH AND ENGINE HARNESS WIRING, INSTALL CLAMP AND REPLACE NEUTRAL START SWITCH
2 1994285 ** 96 V4602 1.2 *0.1 -- OR 1994287
- INSPECT SWITCH AND ENGINE HARNESS WIRING, INSTALL CLAMP, REPAIR ENGINE HARNESS AND REPLACE NEUTRAL START SWITCH 2 1994285 ** 96 V4603 1.3 *0.1 $0.42
* CAMPAIGN ADMINISTRATIVE ALLOWANCE
** THE "PARTS ALLOWANCE" SHOULD BE THE SUM TOTAL OF THE CURRENT GMSPO DEALER NET PRICE, PLUS 30% OF ALL PARTS REQUIRED FOR THE REPAIR.
*** THE $0.42 IN THE "SUBLET" COLUMN REPRESENTS THE COST OF ELECTRICAL MOISTURE SEALANT USED IN CONJUNCTION WITH LABOR OPERATIONS V4601 AND V4603.
COPYRIGHT 1988 GENERAL MOTORS CORPORATION, ALL RIGHTS RESERVED. .
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.
