NO OIL PRESSURE READING AT COLD START (REPLACE P/N)

VEHICLES AFFECTED: 1988 REATTA

Some 1988 Reattas before VIN breakpoint 900600 may experience zero oil pressure reading for several minutes after a cold start intermittently accompanied by the low oil pressure warning message on the Graphic Control Center, the oil pressure warning telltale, and chime.

This condition may be caused by water in the sensor freezing on the sensor contacts. If this condition occurs and engine oil pressure is normal, replace the oil pressure sensor, P/N 1644131.

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.