CAMPAIGN: PARK-LOCK SYSTEM INOP-STG. WHEEL LOCKS IN DRIVE

SUBJECT: PARK-LOCK SYSTEM INOPERATIVE

Models: Certain 1992 Buick Skylark Sedan Models Equipped with Column Shift -----------------------------------------------------------------------------

TO: ALL AFFECTED DEALERS

General Motors of Canada Limited has determined that a defect which relates to motor vehicle safety exists in certain 1992 Buick Skylark Sedan models equipped with column shift. These vehicles may exhibit a condition in which the park lock system does not function properly, due to mis-adjustment of the park lock cable.

It may be possible for the steering column to lock while the vehicle is in motion and in gear after turning the ignition to the OFF position. If this were to occur, the driver's ability to control the vehicle would be affected and a vehicle crash could occur without prior warning.

Also, one of the two anti-theft features of the steering column lock may be disabled resulting in the ability to shift the transaxle out of PARK with the ignition in the LOCK position and the key removed from the lock cylinder.

To prevent this condition from occurring, dealers are to adjust the park lock cable, and re-route and restrain the Brake Transmission Shift Interlock (BTSI) harness and connector.

VEHICLES INVOLVED:

Involved are certain 1992 Buick Skylark Sedan models built within the following VIN breakpoints:

Year Model Plant Plant Code From Through ---- ----- ----- ---------- ---- ------- 1992 Skylark Lansing "C" NC600083 NC602423

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 perform this campaign on all involved vehicles at no charge to owners, regardless of kilometres traveled, 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, you are to ensure the campaign correction has been made before selling 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:

DCS message, dated September 23, 1991, was sent to all GM dealers with instructions to hold all suspect vehicles until the campaign service procedure has been performed. All suspect vehicles MUST be held at dealers and repaired before owners take possession of these vehicles. Completion of this campaign lifts hold on first population of VIN's in the DCS message. There will be no owner notification from GM.

PARTS INFORMATION:

No parts are required.

PARTS AND LABOUR CLAIM INFORMATION:

Credit for the campaign work performed will be paid upon receipt of a properly completed campaign claim card or DCS transmission in accordance with the following:

Repair Code Description Time Allowance ----------- ----------- -------------- 2A R & R Steering Column Cover, .6 Adjust Park Lock Cable and Reroute Wiring

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.

SERVICE PROCEDURE:

1. Place steering wheel in full up tilt position.

2. Remove three (3) hex screws from the LH side sound insulator panel and allow the rear edge of the panel to hang down. See Figure 1.

3. Remove two (2) hex screws from the ALDL connector and allow the ALDL connector to hand down.

4. Remove three (3) hex screws from the lower instrument panel trim cover. This panel is interior trim colour. See Figure 2.

5. Remove four (4) screws from the steering column lower cover (black plastic). The two (2) outer screws are hex screws. The two (2) inner screws are torx screws.

6. Remove the steering column lower cover.

7. Adjust the park-lock cable using the following procedure:

A. Shift into PARK, tum ignition to "OFF", and remove key.

B. Push the white park lock adjuster button and hold in. See Figure 3.

C. While holding the adjuster button in, pull the park lock cable housing downward and away from the adjuster.

D. While maintaining tension on the park lock cable, release the white adjuster button.

E. Release the park lock cable.

8. Open the rectangular steering column wiring conduit and route the BTSI lead into this conduit (the BTSI switch had two (2) leads; one blue and one pink with black spiral strips). See Figure 3.

Close the conduit. The connector at the end of the BTSI lead should now be at the forward end of the conduit.

9. Using electrical tape, secure any excess BTSI wiring to the main wire bundle coming out of the conduit. See Figure 3.

Make sure that there is sufficient slack in the harness by moving the steering column through all tilt positions and checking the harness for any pulling conditions.

10. Position the lower steering column cover to the steering column. See Figure 2.

11. Finger start the two (2) hex screws and the two (2) torx screws.

12. Tighten the two (2) hex screws and then the two (2) torx screws.

13. Position the lower steering column trim cover (interior trim colour) and engage the two (2) retaining clips to the lower I/P trim.

14. Install three (3) screws to secure the lower steering column trim cover.

15. Secure the ALDL connector to the lower steering column trim panel with two (2) screws. See Figure 1.

16. Secure the LH lower sound insulator in position with three (3) screws.

17. Check for proper adjustment of the park lock cable using the following procedure:

A. Open driver's door and keep open.

B. Place column in full up tilt position.

C. Place shift lever in PARK position.

D. Turn ignition key to "LOCK" position.

E. Shift lever should not be able to move to another position. Key should be removable from column.

F . Turn ignition key to "RUN" position.

G. With brake pedal NOT applied, shift lever should not be able to move to another position.

H. Apply brake pedal and place shift lever to "NEUTRAL" position.

NOTE: Shift lever must be all the way into "PARK" with no load on shift lever before applying brakes.

I. Attempt to tum key back to "LOCK" position. Key should not tum to lock or be removable from column. Leave key in "RUN" position.

J. Return shift lever to "PARK".

K. Attempt to tum key back to "LOCK" position. Key should go to "LOCK" and be removable from column (may first need to turn key slightly forward).

L. Remove key and assure key alarm has stopped.

M. Repeat check with column in full down tilt position.

18. All of the above checks must be completed with correct performance. If there is any problem with any of these checks, readjust the park lock cable and repeat the steps in the check procedure.

19. Install Campaign Identification label.

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.