Condition, Dealer Action, Vehicle Involved & Dealer Campaign Information

CONDITION

General Motors has determined that a defect which relates to motor vehicle safety exists in some 1986 and 1987 Buick Riviera models. These vehicles may have insufficient clearance between the power steering pump pressure hose assembly and the transmission governor/speed sensor connector. This condition could cause abrasion of the power steering pump pressure hose assembly and result in a fluid leak. The location of the leak near the exhaust manifold, combined with the high pressure of the fluid, could result in an underhood fire without prior warning.

DEALER ACTION

To prevent the possibility of this condition occurring on vehicles involved, dealers are to replace the power steering pump pressure hose assembly, per the TECHNICAL PROCEDURE of this bulletin.
VEHICLES INVOLVED

Involved are certain 1986 and 1987 Riviera model vehicles assembled at the Hamtramck plant, within the following VIN breakpoints:

MODEL YEAR FROM THROUGH AND INCLUDING

1986 GU400001 GU422144
1987 HU400001 HU415226

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.