ERRATIC FUEL GAUGE READINGS SENDING UNIT REPLACEMENT

VEHICLES AFFECTED: 1985-86 DEVILLE/FLEETWOOD AND CIMARRON WITH DIGITAL CLUSTER 1986 ELDORADO AND SEVILLE

Some 1985-86 DeVilles, Fleetwoods, Cimarrons and 1986 Eldorados and Sevilles equipped with a digital fuel gauge, may experience one of the following erratic fuel gauge reading conditions:

1. The fuel gauge will "count down" (decrease in one gallon increments) to a flashing "E" while having sufficient fuel in the tank.

NOTE: THE CIMARRON FUEL REMAINING BARS WILL DISAPPEAR UNTIL THE "LOW FUEL" INDICATOR ILLUMINATES WITH ONE BAR REMAINING.

2. The fuel gauge reads full at all times (1986 C,E, and K only).

To diagnose these conditions, refer to the following fault trees and then chart "A" if replacement of the tank sending unit is required.

CHART A: FUEL SENDER UNITS

CAR TYPE MODEL YEAR ENGINE TYPE PART NUMBER

J 1985 2.0 25092967 2.8 25092968

1986 2.0 25092971 2.8 25092095

C 1985 4.1 25092964 (1ST DESIGN INTEGRAL WIRES TO RFI CONNECTOR) 25092966 (2ND DESIGN SHADE TYPE CONNECTION TO RFI)

1986 4.1 25092972

E/K 1986 4.1 25092308

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.