CAMPAIGN: REAR BUMPER SUPPORT ALUMINUM REINFORCEMENT. Chevrolet Caprice 1990

Models: 1990 Chevrolet Caprice Wagons W/NA5

General Motors of Canada has determined that certain 1990 Chevrolet Caprice Wagons W/NA5 were built with steel rather than aluminum rear bumper reinforcements. Because of this, these vehicles are outside of their vehicle test weight class.

To correct this condition, aluminum bumper reinforcements will be installed in place of the current steel bumpers reinforcements.

VEHICLES INVOLVED

Involved are certain 1990 Chevrolet Caprice Wagons W/NA5 built within the following VIN breakpoints:

YEAR MODEL PLANT FROM THROUGH ---- ---------- --------- ----- -------- 1990 'B' Wagons Lakewood SOP LA140891 1990 'B' Wagons Arlington SOP EOP

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:

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 to complete this campaign should be ordered through regular channels, as follows:

Part Number Description Quantity/Vehicle ----------- ----------------------------- ---------------- 10182252 Aluminum Bumper Reinforcement 1 Kit Includes: 1 - Reinforcement, Impact Bar - Centre Lower 1 - Vertical Reinforcement, Centre Right 1 - Vertical Reinforcement, Centre Left 2 - Vertical Reinforcement, Outers (Right & Left) 1 - Reinforcement, Impact Bar 4 - Retainer, Stud Plate 20 - Retainer, Reinforcement 2 - Plastic Insulators

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 Install Aluminum Bumper Reinforcement 1.6

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.

NOTICE: ORDER PARTS ONLY AFTER CUSTOMER SERVICE DATES ARE CONFIRMED.

SERVICE PROCEDURE:

1. Raise vehicle on hoist. 2. Remove fitting for air shocks from rear face bar (if equipped). 3. Remove license plate lamp assembly from rear face bar. 4. Loosen nuts attaching rear bumper to energy absorbers. 5. With a helper holding bumper in place, remove nuts and lower bumper to floor.

NOTICE: Observe number and location of any shims between each energy absorber and bumper impact bar.

6. Disassemble impact bar from rear bumper. 7. Disassemble vertical reinforcements from impact bar. 8. Install new retainer clips to new aluminum reinforcements. 9. Install aluminum vertical reinforcements to aluminum impact bar using original reinforcement bolts and torque to 45 N.m (33 lb. ft.). 10. Transfer stud mounting plates to aluminum impact bar and use round push-on retainers to hold in place. 11. Transfer upper reinforcement extension brackets to aluminum impact bar. 12. Assemble rear impact bar and centre lower reinforcement to bumper using original bolts (torque to 45 N.m (33 lb. ft.)) and nuts (torque to 24 N.m (18 lb. ft)).

NOTICE: Position plastic insulators at stud mounting plate area on impact bar to ensure against long term dissimilar metal corrosion.

13. With aid of helper, locate rear bumper assembly to body and loosely install attaching nuts. 14. Install any shims (previously removed and noted) at each energy absorber location. 15. Align bumper to body and tighten attaching nuts to 32 N.m (24 lb. ft.). 16. Reinstall license plate lamp assembly to face bar. 17. Reinstall air shock fitting to face bar (if equipped). 18. 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.

Dear General Motors Customer.

General Motors of Canada has determined that your 1990 Chevrolet Caprice Wagon was built with a steel, other than aluminum, rear bumper reinforcement. Because of this, your vehicle is outside its vehicle test weight class.

To correct this condition, an aluminum bumper reinforcement will be installed in place of the current steel bumper reinforcement.

This service will be provided for you at no charge.

Please contact your GM dealer as soon as possible to arrange a service date.

This letter identifies your vehicle. Presentation of this letter to your dealer will assist their Service personnel in completing the necessary correction to your vehicle in the shortest possible time.

Further assistance, if required, may be obtained from our Customer Assistance Centre, toll free, by calling 1-800-263-3777, or if you live in Quebec, 1-800-263-7854.

We are sorry to cause you this inconvenience; however, we have taken this action in the interest of your continued satisfaction with our products.

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.