BUICK LESABRE 1987: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

NHTSA Campaign ID Number: 87V093000

Production Dates: 1985-06-01 - 1986-09-01

Manufacturers Involved: General Motors, LLC

Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

Potential Number Of Units Affected: 6004

Report Initiator: MFR MFR Report

THE ANTI LOCK BRAKE SYSTEM "ABS" PRESSURE/WARNING SWITCH MAY EXHIBIT BRAKE FLUID SEEPAGE WHICH EVENTUALLY CAN LEAD TO LOSS OF THE BRAKE SYSTEM HYDRAULIC PUMP MOTOR. ADDITIONALLY, THE HYDRAULIC PUMP MOTOR AND ABS ELECTRICAL RELAYS MAY HAVE BEEN EXPOSED TO WATER CONTAMINATION DURING VEHICLE ASSEMBLY. THIS CONDITION CAN CAUSE LOSS OF THE HYDRAULIC PUMP MOTOR AND/OR LOSS OF THE ABS FUNCTION.

LOSS OF THE HYDRAULIC PUMP MOTOR WOULD RESULT IN A TOTALLOSS OF REAR BRAKES AS WELL AS POWER ASSIST TO THE FRONT BRAKES. THE RED BRAKEWARNING LIGHT WOULD ILLUMINATE AND STAY ON. IF THIS WARNING IS NOT HEEDED, ALOSS OF REAR BRAKES AT A TIME WHEN MINIMUM STOPPING DISTANCE IS REQUIRED COULDRESULT IN A VEHICLE CRASH. AN INOPERATIVE ABS ELECTRICAL RELAY COULD CAUSELOSS OF THE ABS FUNCTION, BUT NORMAL POWER ASSISTED BRAKING WOULD BE RETAINED.THE AMBER ANTI LOCK WARNING LIGHT WOULD ILLUMINATE AND STAY ON.

THE ABS AND HYDRAULIC PUMP MOTOR ELECTRICAL RELAYS AND 30 AMP FUSES WILL BE REPLACED. IN ADDITION, THE HYDRAULIC PUMP MOTOR ASSEMBLY AND PRESSURE/WARNING SWITCH WILL BE INSPECTED AND, IF REQUIRED, REPLACED.

SYSTEM: BRAKES.VEHICLE DESCRIPTION: PASSENGER CARS WITH ANTI LOCK BRAKES.