1987 Buick Lesabre problems

BRAKE FAILURE

BRAKE FAILURE

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REAR BRAKE PIN

SUMMARY:THESE VEHICLES HAVE REAR DRUM BRAKES.THE PARKING LEVER PIVOTPIN IS HELD BY AN E RING.WHEN THE RING FAILS, PARTS OF THE RING ANDPIN FALL LOOSE INTO THE DRUM AND MAY JAM THE BRAKE, LOCKING THE WHEEL.A STRONGER E RING IS USED IN 1988 AND NEWER CARS.THIS INVESTIGATIONHAS BEEN EXPANDED TO INCLUDE GMS C BODY CARS LISTED ABOVE (E RING COMMONTO ALL CARS SHOWN).===

REAR BRAKE PIN

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ANTI LOCK BRAKES

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THROTTLE NON-RETURN

INSTRMNT LIGHT ON WINDSHLD

STALLING

SUMMARY:THE COMPLAINTS ALLEGE THAT STALLING IS DUE TO VARIOUS FAULTYCOMPONENTS OF THE FUEL INJECTION AND/OR IGNITION SYSTEM. THE FOLLOWINGMODELS ARE INVOLVED:BUICK ELECTRA, LESABRE, RIVERA, CENTURY; OLDS CUTLASSCIERA, 88, 98, TORONADO; PONTIAC BONNEVILLE.STATUS:THIS INVESTIGATION IS ONGOING.WE ARE CONTINUING TO ANALYZEINFORMATION PROVIDED BY GM AND ARE PREPARING AN ADDITIONAL INFORMATIONREQUEST TO GM TO CLARIFY CERTAIN TECHNICAL ITEMS.===

FUEL SYSTEM, GASOLINE

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURED FROM OCTOBER 18, 2005, THROUGH MARCH 21, 2006, SOLD FOR USE ON THE VEHICLES LISTED ABOVE AND ON CERTAIN SCHOOL BUSES. (TO SEE THE SCHOOL BUS ENGINE SIZES, CLICK ON "DOCUMENT SEARCH" AND THEN "BUS APPLICATIONS"). THE CONNECTOR ON THE FUEL FILTER WAS NOT MANUFACTURED TO HONEYWELL'S SPECIFICATION. AS A RESULT, THE O-RING MAY NOT SEAT CORRECTLY ON THE FUEL LINE.

Risk: THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. IN THE PRESENCE OF AN IGNITION SOURCE, A FIRE COULD OCCUR.

VEHICLE SPEED CONTROL

A SMALL NYLON BUSHING IN THE CRUISE CONTROL SERVO BAIL MAY SLIP OUT OF PLACE, CAUSING INTERMITTENT AND UNEXPECTED INCREASES IN ENGINE SPEED OR DIESELING (ENGINE RUN ON WITH IGNITION OFF).

Risk: SERVO ROD ASSEMBLY COULD CATCH ON ENGINE COMPONENTS ANDRESULT IN A STUCK THROTTLE WITH POTENTIAL FOR A VEHICLE CRASH.

SERVICE BRAKES, AIR:ANTILOCK

LOW TORQUE OF THE BRAKE HYDRAULIC UNIT MOUNTING BOLTS COULD CAUSE INCREASED BRAKE PEDAL TRAVEL AND/OR POOR PEDAL FEEL IF ATTACHMENT LOOSENS.

Risk: THIS CONDITION COULD LEAD TO SEPARATION OF BRAKEHYDRAULIC UNIT FROM ITS MOUNTING BRACKET AND RESULT IN LOSS OF BRAKE FUNCTIONAND AN ACCIDENT.

ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS

AN IN LINE FUSIBLE LINK MAY MELT DOWN AND CAUSE A FIRE.

Risk: THE IN LINE FUSIBLE LINK LOCATED IN THE AREA OF THEPLASTIC WINDSHIELD WASHER BOTTLE BRACKET MAY, UNDER A HIGH RESISTANCE LOAD,MELT DOWN AND IGNITE THE WASHER BOTTLE BRACKET RESULTING IN AN ENGINECOMPARTMENT FIRE.

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

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.

Risk: 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.

Engine

A SMALL NYLON BUSHING IN THE CRUISE CONTROL SERVO BAIL (BRACKET) MAY SLIP OUT OF PLACE RESULTING IN POSSIBLE INTERMITTENT INCREASES IN ENGINE SPEED OR DIESELING. THIS CONDITION COULD ALSO CAUSE THE SERVO ROD ASSEMBLY TO WEAR THROUGH THE BALL AND CATCH ON OTHER COMPONENTS POSSIBLY RESULTING IN A STUCK THROTTLE. THIS COULD RESULT IN LOSS OF VEHICLE CONTROL AND A POSSIBLE CRASH. CORRECTION: A BUSHING KIT WILL BE INSTALLED ON THE CRUISE CONTROL SERVO BAIL.

Brakes

THE BRAKE HYDRAULIC UNIT MOUNTING BOLTS ON THESE VEHICLES MAY HAVE BEEN UNDERTORQUED. THIS CONDITION COULD CAUSE INCREASED BRAKE PEDAL TRAVEL AND/OR POOR PEDAL FEEL IF THE ATTACHMENT LOOSENS. IN ADDITION, THIS CONDITION COULD EVENTUALLY LEAD TO SEPARATION OF THE BRAKE HYDRAULIC UNIT FROM ITS MOUNTING BRACKETS RESULTING IN BRAKE LOSS AND A POSSIBLE VEHICLE CRASH. CORRECTION: HYDRAULIC UNIT MOUNTING BOLTS WILL BE REPLACED ON INVOLVED VEHICLES.

Electrical

UNDER A HIGH RESISTANCE LOAD, THE IN-LINE FUSEABLE LINK LOCATED IN THE AREA OF THE PLASTIC WINDSHIELD WASHER BOTTLE BRACKET, MAY MELT DOWN AND IGNITE THE BRACKET. THIS COULD RESULT IN AN ENGINE COMPARTMENT FIRE WITHOUT PRIOR WARNING. CORRECTION: WINDSHIELD WASHER BOTTLE BRACKET WILL BE REPLACED ON AFFECTED VEHICLES.

Brakes

ON VEHICLES WITH ANTILOCK BRAKES,BRAKE FLUID MAY SEEP FROM THE ABS PRESSURE/WARNING SWITCH,EVENTUALLY LEADING TO THE LOSS OF THE HYDRAULIC PUMP MOTOR.ALSO THE PUMP MOTOR AND ABS ELECTRICAL RELAYS MAY HAVE BEEN CONTAMINATED DURING ASSEMBLY.THIS CAN CAUSE LOSS OF THE HYDRAULIC PUMP MOTOR &/OR THE ABS FUNCTION.LOSS OF THE PUMP MOTOR WOULD EVENTUALLY LEAD TO LOSS OF THE REAR BRAKES & LOSS OF POWER ASSIST TO THE FRONT BRAKES.THIS WOULD RESULT IN INCREASED STOPPING DISTANCE.AN INOPERATIVE ABS RELAY COULD CAUSE LOSS OF THE ABS FUNCTION.ABS,PUMP MOTOR RELAYS,& 30 AMP FUSES WILL BE REPLACED.

Emissions

THESE VEHICLES DO NOT COMPLY WITH C.M.V.S.S. 1103 - EXHAUST EMISSIONS. - MASS AIRFLOW SENSOR FAILURE - NOTE : VEHICLES WITH 3.0 LITRE AND 3.8 LITRE ENGINES.