Custom Cruiser V8-307 5.0L (1987)
Technical Service Bulletin # 87C05
Date: 870701
Recall - ABS Relay/Fuse Replacement
SUBJECT
ANTI-LOCK BRAKE (ABS) PRESSURE
NUMBER: 87-C-05
WARNING SWITCH
DATE:
July 2, 1987
1986 AND CERTAIN 1987 OLDSMOBILE
MODELS/YEARS
NINETY-EIGHT REGENCYS EQUIPPED WITH
SECTION: 5E
ANTI-LOCK BRAKE SYSTEM
Condition & Service Information
Condition
General Motors has determined that a defect which relates to motor vehicle safety may exist in some 1986 and 1987 Ninety-Eight Regencys equipped
with Anti-Lock Brake System (ABS).
Involved vehicles may exhibit brake fluid seepage from the ABS pressure/warning switch which eventually can lead to loss of the brake system hydraulic
pump motor. Loss of the hydraulic pump motor would, after accumulated pressure has been depleted (approximately 10-30 normal stops), result in a
total loss of rear brakes as well as power assist to the front brakes. The red "Brake" warning light would, before accumulated pressure has been depleted,
illuminate and stay ON. If this warning is not heeded, a loss of rear brakes at a time when minimum stopping distance is required could result in a vehicle
crash.
Vehicles Involved
Certain 1986 and 1987 Ninety-Eight Regencys equipped with ABS brakes (JM4) within the following vehicle breakpoints:
Year
Series
Plant
From
Through and Including
1986
"98"
Orion
Start of Production
G4381271
1986
"98"
Wentzville
Start of Production
G1342814
1987
"98"
Orion
Start of Production
H4312651
Dealer Action
To correct this condition, dealers are to replace the pump motor relay and 30 amp ABS fuses on all vehicles involved. In addition, dealers are to inspect
and replace, if required, the hydraulic pump and motor and/or pressure switch as instructed in the Service Procedure of this bulletin.
Dealers are to service all vehicles involved in this campaign, at no charge to owners, regardless of mileage, age of vehicle, or ownership. Whenever a
vehicle subject to this campaign is taken into your new or used car inventory, dealers are to take the steps necessary to be sure the campaign correction
has been made before reselling the vehicle.
In addition, dealers are to perform the campaign on all affected vehicles as they are brought in for any kind of service.
Service Procedure
1.
Raise hood, install fender covers. Leave ignition key in OFF position. Disconnect battery cables from battery.
