PREMATURE TRIP ODOMETER ROLLOVER REPAIR

VEHICLES AFFECTED: 1985-1988 VEHICLES

*Some 1985-1988 DeVilles and Fleetwoods equipped with Digital Instrument Clusters may exhibit a condition where the trip odometer will rollover (reset to zero) after driving about 600 miles. The speedometer and season odometer are unaffected.

This is a normal condition and does not require repair or replacement of the Digital Instrument Cluster.

The trip odometer rollover criteria is dependent on the display mode, English or Metric, that was in use at the time the owner last reset the trip odometer to zero. If the trip odometer was last reset to zero by the owner while in the Metric display mode, the trip odometer will rollover to zero at 621.3 miles (999.9 kilometers). Conversely, if the trip odometer was last reset to zero by the owner while in the English display mode, the trip odometer will rollover to zero at 999.9 miles (1609.2 kilometers).

In order for the trip odometer to always rollover at 999.9 miles, the the owner should only reset the trip odometer to zero while in the English display mode. Owners who comment on this early rollover condition should be made aware of this procedure.

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.