SERVICE GUILD: FUEL TANK OIL CANNING/POPPING

VEHICLES AFFECTED: 1988-89 W-CAR

Some 1988-89 W-cars assembled prior to the VIN breakpoints indicated below may exhibit an audible fuel tank oil canning/ popping noise. To eliminate this condition, an interim design change that incorporates additional ribbing to the upper and lower fuel tank sections was initiated.

Marketing Division VIN Breakpoint ------------------ -------------- Pontiac 1G2WK14W9KF206642

Oldsmobile 1G3WR14W8KD303396

Buick 2G4WD14W2K1418999

Vehicles exhibiting this condition may be repaired by replacing the existing fuel tank with a new tank, P/N 10140614, following applicable shop manual procedures.

Use applicable labour operation and time.

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.