Toronado V6-231 3.8L (1986)
Technical Service Bulletin # 87C03
Date: 870401
Campaign - Low Engine Oil Pressure Warning Malfunction
SUBJECT
LOW ENGINE OIL PRESSURE WARNING
NUMBER: 87-C-03
DATE:
April 6, 1987
MODELS/YEARS
1986 & 1987 TORONADO
SECTION: 8C
CONDITION
General Motors has determined that all 1986 and certain 1987 Oldsmobile Toronado models were produced with a low engine oil pressure warning
system that could malfunction resulting in an erroneous low engine oil pressure warning to the vehicle driver..
To prevent the possibility of this condition occurring on 1986 models, dealers are to install a new EPROM in the body computer module (BCM), replace
the three-terminal oil pressure switch with a new four-terminal oil pressure sensor, inspect the sensor wiring harness connector terminals for corrosion,
and clean or replace the terminals if necessary.
To prevent the possibility of this condition occurring on 1987 models, installation of a new EPROM in the body computer module (BCM) is required.
VEHICLES INVOLVED
Involved are all 1986 and certain 1987 Oldsmobile Toronado models within the following VIN breakpoints:
Model
Year
Plant
Beginning
Up To And Including
1986
Hamtramck (U)
Start of Production
End of Production
1987
Hamtramck (U)
Start of Production
HU305043
DEALER ACTION
Dealers are to service all vehicles subject to this campaign at no charge to the owner, regardless of mileage, age of vehicle, or ownership, from this time
forward.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future, you
should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.
Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer and arrangements made to make the required
modification according to instructions contained in this bulletin.
Service Procedure
If the vehicle is a 1986 model, begin with Part A of this service procedure. If the vehicle is a 1987 model, begin with Part C of this service procedure.
A.
Inspection
1.
Open hood and install fender covers.
