Condition, Dealer Action, Vehicles Involved and Owner Notification
CONDITIONGeneral Motors has determined that a defect which relates to motor vehicle safety may exist in some 1986 and 1987 Fleetwood and De Ville models equipped with the 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.
DEALER ACTION
To correct this condition, dealers are to replace the pump motor relay and 30 amp ABS fuses on ail 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.
VEHICLES INVOLVED
All 1986 and 1997 Fleetwood and De Ville models equipped with ABS brakes (JM4) within the following VIN range require this campaign (Cadillac records indicate that a total of 2,861 vehicles are affected):
1986 Models - G4200004 through G4367558 1987 Models - H4200003 through H4223360
OWNER NOTIFICATION
OWNERS OF VEHICLES AFFECTED BY THIS CAMPAIGN WILL BE NOTIFIED BY LETTER FROM CADILLAC MOTOR CAR DIVISION. A COPY OF THE OWNER LETTER IS ATTACHED.