CAMPAIGN: SUPPLEMENTAL INFLATABLE RESTRAINT SENSOR

MODELS AFFECTED: 1990 REATTA

General Motors of Canada has determined that some 1990 Buick Reatta model vehicles may fail to conform to the requirements of Canada Motor Vehicle Safety Standard (CMVSS) 208, "Seat Belt Installations." The forward discriminating sensor for the supplemental inflatable restraint (SIR) system may ahve been misbuilt with the pigtail witing harness orientation to the sensor reversed. Under certain conditions, this misrouting could delay deployment of the SIR system, increasing the severity of injury to those drivers who neglect to wear the belt system.

Dealers are to inspect the forward discriminating sensor on all suspected vehicles, and replace as required, per the Vehicles Involved and Technical Procedure section of this bulletin.

VEHICLES INVOLVED

1G4EC13C4LB900333 95599 1G4EC13C9LB900392 86485 1G4EC13C3LB900436 85973 1G4EC13CXLB900885 95599

All affected vehicles have been identified by the VIN listing provided to involved dealer with this bulletin. Any delaer 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 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 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 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 forst 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 Name Part Number Quantity/Vehicle --------- ----------- ----------------- Forward Discriminating 16126369 1 as required Sensor

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 ------------ ----------------------------- ------------ 1A Inspect forward discriminating sensor .3 pigtail harness routing only

2A Inspect and replace forward .8 discriminating sensor

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

INSPECTION

1. Raise hood and remove the three plastic radiator cover retaining screws and four plastic retaining clips to gain access to the forward discriminating sensor.

2. With your hand, feel the routing of the pigtail harness where it attaches to the forward discriminating sensor. Harness should go straight across the front towards the driver's side of the vehicle with no reversing loop (see enclosed illustration). Harness should have some slackness.

o If harness is properly routed, proceed to Step 4. o If harness routing needs correction, proceed to Step 3.

REPLACEMENT

3. Follow the remaining instructions and cautions for replacing the forward discriminating sensor in the 1990 Riviera/Reatta Service Manual, pages 9J-B-1 through 3. See enclosed illustration with this bulletin for proper routing of the pigtail harness. Tamper resistant torx insert bit referred to in the Service Manual as 00-T27H is essential tool J-38597.

4. Install campaign identification label and close hood.

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.