General Motors of Canada has determined that certain 1986 S/T Light Duty model trucks built at Moraine Truck Assembly do not conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 120, "Tire Selection and Rims for Vehicles Other Than Passenger Cars". The trucks were assembled correctly except that the tire and wheel information on the certification label may be incorrect. Specifically, all of the 5's were changed to 6's (ie. P195/75Rl4 read P196/76RI4 and 15 x 6JJ read 16 x 6JJ).
To correct this condition, a new certification label is to be affixed to each affected vehicle.
Since a new certification label can be easily installed and to reduce owner inconvenience, new certification labels will be sent directly to owners of record. Owners may install a new label or ask a Dealer to do the service. Dealer service is to be done at no charge to owners.
Certain 1986 S/T trucks built at Moraine.
GMC: G2500001 to G2501892 CHEV: G2100001 to G2109216
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.
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.
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.
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.
Certification labels will be sent to owners of record.
Should a customer approach you to perform campaign work, please submit as warranty claim with special labour operation T8006 which pays .3.
Owners may elect to affix the label themselves using the procedure outlined in the Owner's Letter. If, however, an owner elects for the Dealer to affix the label, the following Service Procedure is to be used.
1. Open driver's door.
2. Verify that the Vehicle Identification Number (VIN) of the new Certification Label is the same as the existing label. (See illustration in the owner's letter.)
If the VIN of the new certification label is different than the existing label, contact your Zone Office to arrange to receive the correct label.
If the VIN of the new certification label is the same as the existing label, follow the remaining steps of this procedure and install the new label.
3. With an appropriate instrument, lift corner of Tire-Loading Information label and peel from door edge.
4. Clean area where new label will be installed.
5. Remove protective backing from new label, and carefully apply to vehicle in same location as original 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.
1. Open driver's door.
2. Verify that the Vehicle Identification Number (VIN) of the new Certification Label is the same as the existing label.
If the VIN of the new certification label is different than the existing label, contact your Zone Office to arrange to receive the correct label.
If the VIN of the new certification label is the same as the existing label, follow the remaining steps of this procedure and install the new label.
3. With an appropriate instrument, lift corner of Tire-Loading Information label and peel from door edge.
4. Clean area where new label will be installed.
5. Remove protective backing from new label, and carefully apply to vehicle in same location as original label.
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.