DRIVER INFORMATION SYSTEM CONDITIONS DESCRIBED

VEHICLES AFFECTED: 1989 C AND H SERIES

Two conditions have been encountered in the Driver Information System used on some 1989 Oldsmobile 88 and 98's equipped with Option U51.

Power Up Sequence

Condition: DIS display lock-up.

Service Procedures:

1. Turn ignition switch "off". 2. Remove DIS fuse No. 11 or disconnect battery. 3. Reinstall fuse or reconnect battery. Make sure ignition switch remains off until Step 3 is completed.

Low Temperature Display Flashing

Condition: Intermittent display flashing associated with low temperatures. ---------- Normal operation resumes when vehicle warms up.

Service Procedure:

Replace DIS module with new module after date code 0099.

IMPORTANT: Modules after the above date will have the internal fix for the --------- power up sequence condition.

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.