CAMPAIGN: TRANSMISSION NEUTRAL START SWITCH WIRING HARNESS
TRANSMISSION NEUTRAL START SWITCH WIRING HARNESS ABRASION
1989 Buick Regal
CONDITION:
---------- General Motors of Canada has determined that some 1988 Buick Regals 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.
To prevent this condition from occurring, the neutral start switch wiring harness will be inspected and repaired. Replacement of the neutral start switch wiring harness will be made when necessary.
VEHICLES INVOLVED:
Involved are certain 1988 Buick Regal Models produced within the following VIN breakpoints:
Plant From Through ----- ---- ------- Oshawa J1400064 J1404825
All affected vehicles have been identified by the VIN listing provided to involved Dealers with this bulletin. Any Dealer not receiving a listing was not shipped any of the affected vehicles.
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 modification according to instructions contained in this bulletin.
CAMPAIGN PROCEDURE:
Refer to Section 4 of the Service Policies and Procedures Manual for the detailed procedure on handling Product Campaigns. Dealers are requested to complete the campaign on all transfers as soon as possible.
OWNER NOTIFICATION:
All owners of record at the time of campaign release are shown on the attached computer listing and have been notified by first class mail from General Motors. The listings provided are for campaign activity only and should not be used for any other purpose.
PARTS INFORMATION:
Parts required should be ordered through regular channels, as follows:
Quantity/ Part Number Description Vehicle ----------- ----------- --------- 12084232 Wiring Harness Clamp 1 1994287 * Neutral Start Switch (W/O UB3 Gauges) 1 1994285 * Neutral Start Switch (W/UB3 Gauges) 1
* It is estimated that only 10% of the vehicles involved will require replacement of the neutral start switch. Order parts accordingly, based on the attached vehicle listing.
PARTS AND LABOUR CLAIM INFORMATION:
Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card, RAPID terminal or DCS transmission in accordance with the following:
Repair Code Description Time Allowance ----------- ----------- -------------- 2A Inspect Switch & Engine .6 Harness Wiring & Install Clamp
3A Inspect Switch & Engine .7 $.55 Harness Wiring, Install Clamp & Repair Engine Harness
4A Inspect Switch & Engine 1.3 Harness Wiring, Install Clamp & Replace Neutral Start Switch
5A Inspect Switch & Engine 1.4 $.55 Harness Wiring, Install Clamp, Repair Engine Harness & Replace Neutral Start Switch
Time allowance includes 0.1 hour for Dealer administrative detail associated with this campaign. Parts credit will be based on Dealer net plus 30% to cover parts handling. The $.55 in 3A and 5A is to cover the cost of electrical moisture sealant.
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 either are worn, refer to appropriate repair procedure(s) (Section B and/or C) which are outlined below. If no wear is observed, proceed to Step 5.
5. Lower vehicle.
6. Install wiring harness clamp (P/N 12084232) around the neutral start 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. NOTE: DO NOT DISCONNECT LEVER FROM CABLE.
8. Remove switch - two (2) bolts.
SECTION B - NEUTRAL START SWITCH REPLACEMENT
INSTALLATION AND ADJUSTMENT
1. Align notch (groove on inner sleeve of switch) with notch (groove) on switch body.
2. Install switch and torque bolts (20-30 N.m) (15-22 lb. ft.).
3. Install shift linkage and torque nut (16-24 N.m) (12-18 lb. ft.).
4. Raise vehicle.
5. Reconnect switch connector and install CPA.
6. Reconnect harness retention clips.
7. Lower vehicle.
8. Install wiring harness clamp (P/N 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.
NOTE: After switch has been installed, verify engine will only start in "PARK" or "NEUTRAL". If engine will start in any other position, readjust switch using "replacement - old switch" procedure shown in 1988 Buick Regal Service Manual, Section 7A1.
10. Install cruise control servo and torque nuts (2.5-4.0 N.m) (2-3 lb. ft.).
11. Reconnect vacuum lines and electrical connector at servo.
12. Reconnect battery.
13. 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.
INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL
Clean surface of radiator upper mounting panel and apply a Campaign Identification Label. Make sure the correct campaign number is inserted on the label. This will indicate that the campaign has been completed.
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.
