CAMPAIGN: FRONT SEAT ANCHOR BOLT BROKEN - INSTALL BRACKET

MODELS: 1983 & 1984 J CARS WITH MANUALLY ADJUSTABLE DRIVER'S SEAT

General Motors of Canada has determined that a defect which relates to motor vehicle safety exists in some 1983 and 1984 Cavalier, Sunbird, Skyhawk, Firenza and Cimarron models equipped with a manually adjustable driver's seat. The metal floor pan anchor bar could fatigue and break around the left front outer seat adjuster stud of the driver's seat. This could allow the stud to separate from the floor pan anchor bar. Although the seat assembly, would still be attached to the floor at three other locations, separation of the left front outer seat adjuster stud from the floor pan anchor bar could cause the driver's seat to tip rearward unexpectedly. This could cause a loss of vehicle control which could result in a vehicle crash without prior warning.

To prevent the possibility of this occurring on vehicles involved, Dealers are to install a reinforcement bracket on the floor pan anchor bar at the left front outer seat adjuster position of the driver's seat.

VEHICLES INVOLVED

Involved are all 1983 and 1984 Oldsmobile Firenza, Buick Skyhawk, Pontiac Sunbird, Chevrolet Cavalier and Cadillac Cimarron models equipped with a manually adjustable driver's seat.

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:

As it is anticipated, parts will be in short supply, we will generate automatic shipments up to quantities of 40% after which we will open to Dealer orders.

Description Part Number Quantity

Reinforcement Bracket Kit* 20717579 1

* Reinforcement Bracket Kit Contains: 1 - Floor Pan Anchor Bar Reinforcement Bracket

10 - 3/16" x 1/2" Button Head Aluminum Rivets

PARTS AND LABOUR CLAIM INFORMA.TION:

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 Install floor pan anchor .7 bar reinforcement bracket. Tack weld anchor bar stud to bracket if necessary.

Time allowance includes 0.1 hour for Dealer administ;ative detail associated with this campaign. Parts credit will be based on Dealer net plus 30% to cover parts handling.

SERVICE PROCEDURE:

A. Left Front Seat Removal

1. Remove seat adjuster trim cover retaining screws and remove trim covers.

2. Remove four (4) seat adjuster-to-floor pan anchor bar nuts and remove seat assembly from car.

3. Remove carpet retainer trim from bottom of door opening.

4. Remove front Rick panel.

5. Remove seat belt (shoulder belt) anchor bolt.

6. Lift and roll carpet back to expose the left front outboard floor pan anchor bar stud.

7. Examine floor pan anchor bar at stud location and determine condition of stud to anchor bar attachment.

- If stud is loose, i.e., stud beginning to tear or is torn away from anchor bar, proceed to Part B, Step 1 of this service procedure.

- If stud attachment to anchor bar is secure, proceed to Part C, Step I of this service procedure.

B. Anchor Bar Stud Loose

1. Remove stud from floor pan anchor bar. Stud removal can be accomplished by using a 1/4" drill bit and drilling through any anchor bar sheet metal stall attached to stud head. To prevent drilling into the stud head, drill through anchor bar sheet metal approximately 1/2" from stud centre. Care must be taken not to damage threads on stud.

2. Using a bench grinder, grind off jagged edges of sheet metal on stud head. It is not necessary to remove the sheet metal remaining on the inside (thread side) of stud head.

3. From underside of reinforcement bracet, place stud through hole and tack weld stud to bracket. (Purpose of weld is to keep stud from rotating when seat adjuster-to-floor pan anchor bar nut is tightened

4. Position reinforcement bracket (sloped end inboard) on top of floor pan anchor bar. Head on the stud should be positioned into the hole left in anchor bar where stud was removed. Be sure underside of reinforcement bracket evenly contacts top surface of anchor bar.

5. With reinforcement bracket correctly positioned on top of anchor bar, drill four (4) 3/16" holes in top of anchor bar using the pre-drilled holes in reinforcement bracket as a guide.

6. Proceed to Part C, Step 3 of this service procedure.

C. Anchor Bar Stud Secure

1. Place reinforcement bracket (sloped end inboard) over anchor bar stud and allow bracket to self-locate on top of anchor bar. Be sure underside of reinforcement bracket evenly contacts top surface of anchor bar.

2. With reinforcement bracket correctly positioned on top of anchor bar, drill four (4) 3/16" holes in top of anchor bar using the pre-drilled holes in reinforcement bracket as a guide.

3. To secure reinforcement bracket to anchor bar, installand fasten four (4) 3/16" x 1/2" rivets in drilled holes.

4. Repeat drilling and rivet installation procedure for the remaining six (6) holes ( 3 each side) in the reinforcement bracket.

5. To reassemble, reverse Steps I throuqh 5 in Part A of this procedure. Tighten seat adjuster to floor pan anchor bar nuts to 24 N.m ( 1 8lbs. ft.). When reinstalling seat belt anchor bolt, be sure belt is not twisted. Tighten seat belt anchor bolt to 42 N.m (31 lbs. ft.).

6. Check seat adjuster for proper operation.

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 thes 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.