Beretta V6-173 2.8L (1989)
Oil Pressure Sender: All Technical Service Bulletins
Instruments - Oil Pressure Light May Flicker At Idle
Number:
89-254-SC
Section:
8C
Date:
September 1989
Corporate Bulletin No.: 938306
Subject:
OIL PRESSURE LIGHT MAY FLICKER AT IDLE IN HOT AMBIENT
Model and Year:
1988-89 A, J, L CARS WITH 2.8L ENGINES
TO:
ALL CHEVROLET DEALERS
The oil pressure light may flicker at idle in very hot ambient temperatures. This condition may occur on 1988 J and L cars, and on 1989 A. J, and L cars
with 2.8L engines, with optional gage packages (these vehicles use both a gage and an oil pressure warning light).
The diaphragm, which moves with changes in oil pressure, may be affected by high ambient temperatures in the sensor, because the sensor is not vented.
The high temperature causes the air inside the sensor to expand, pushing against the diaphragm, givng a lower than actual reading, which may cause the
warning light to flicker at idle.
A new vented oil pressure sensor, part number 10096199, has been released for 1990 production. This new sensor should be used for the above
applications for service.
Parts are currently from GMSPO.
Warranty Information:
Use Labor Operation N2220, with applicable time.
