INACCURATE FUEL GAGE READING INSTALL FILL TUBE EXTENSION

VEHICLES AFFECTED: 1991 B-CAR

THIS BULLETIN HAS BEEN REVISED TO CORRECT THE VIN BREAKPOINT TO READ MW130163.

CONDITION:

Some 1991 B-cars assembled prior to VIN breakpoints MW130163, may exhibit a condition where there is very little relative fuel gauge needle movement regardless of the amount of fuel in the fuel tank.

CAUSE:

Plastic fuel tank fill tube extension tab (internal to tank) not inserted into slot in fuel tank reservoir. Unsecured tab may restrict travel of fuel tank sender float arm resulting in inaccurate fuel gauge readings.

CORRECTION:

Remove vehicle fuel tank and sender assembly following applicable shop manual procedure. Accessing thru fuel tank sender opening, insert fill tube extension tab into reservoir retainer. Reinstall sender assembly and fuel tank.

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.