1999 Buick Century TSBs

SOME OWNERS MAY COMMENT ON A REPEAT ENGINE OIL PAN LEAK.

SUBJECT REGARDING REVISED LOWER INTAKE MANIFOLD INSTALLATION.

SUBJECT REGARDING VARIOUS DRIVEABILITY SYMPTOMS, MALFUNCTION INDICATOR LAMP ILLUMINATES INTERMITTENTLY, DIAGNOSTIC...

SUBJECT REGARDING POLYMER SERVICE PISTONS.

OWNERS OF SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60, 4T60-E OR 4T65-E TRANSAXLES MAY COMMENT ON A GRINDING AND...

SOME OWNERS MAY COMMENT ON DRIVEABILITY SYMPTONS OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT...

SOME OWNERS MAY COMMENT ON A REPEAT ENGINE OIL PAN LEAK.

SOME OWNERS MAY EXPERIENCE A DRIVEABILITY SYMPTOM OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE.

SUBJECT ON ENGINE MISFIRE - INSPECT/ REPLACE IGNITION CONTROL MODULE.

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels.

Refinishing Aluminum Wheels This bulletin updates General Motor's position on refinishing aluminum wheels.

This Preliminary Information communication provides information to the technician about cooler line fittings that come...

GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION.

WIRE HARNESS MAY BE STRETCHED, OR THE PCS MAY NOT BE ORIENTED IN THE SAME POSITION, AFTER INSTALLING A SERVICE REPLACEMENT VALVE BODY ASSEMBLY.

DEALERS MAY COMMENT ON A CHUGGLE, SURGE, MISFIRE CONDITION.

ENGINE START AND STALL AFTER FUELING WITH NO DIAGNOSTIC TROUBLE CODES (DTCS).

SOME VEHICLES BUILT PRIOR TO VIN BREAKPOINT 1F136536 MAY EXHIBIT INTERMITTENT MALFUNCTION INDICATOR LAMP / SERVICE...

REVISED PISTON PIN REMOVAL / INSTALLATION PROCEDURE.

CONCERNS WITH TILT SETTERING COLUMN STICKING IN POSITION AND UNABLE TO RELEASE.

CONCERNS WHERE THE CARPET PULLS OUT FROM UNDER THE SILL PLATE ON THE LEFT OR RIGHT REAR FOOT WELL AREA.

INFORMATION REGARDING ITCHING TYPE NOISE FROM REAR OF VEHICLE.

INFORMATION REGARDING A CLUNK OR POP NOISE IN THE LEFT FRONT FOOT WELL AREA.

SOME CUSTOMERS MAY COMMENT THAT THE CARPET ON THE FRONT PASSENGER SIDE IS WET.

SOME CUSTOMERS MAY COMMENT ON A POPPING OR SNAPPING SOUND WHEN DOWNWARD PRESSURE IS APPLIED TO THE REAR SEAT CUSHION AT...

A CONDITION MAY EXIST OF A HIGH AMOUNT OF EFFORT REQUIRED TO SOUND THE HORN.

SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60 OR 4T60-E TRANSXALES MAY COMMENT ON A GRINDING AND / OR GROWLING...

CUSTOMERS MAY COMMENT THAT THE CONVENIENCE OR CARGO NET IN THE LUGGAGE COMPARTMENT CARGO IS TOO SHORT OR REQUIRES...

SOME CUSTOMERS MAY COMMENT THAT THE CUPHOLDER MAY SEPARATE FROM THE ARMREST.

COMMENTS ON SWITCHING BETWEEN LOCAL STATIONS OR CROSS TALK IN METROPOLITAN AREAS WITH SEVERAL STRONG AM STATIONS.

SOME VEHICLES MAY EXPERIENCE A SHAKING SENSATION WHEN VEHICLE IS OPERATED BETWEEN 35-55 MPH (55-90 KM/H) ON SMOOTH ROADS WITH CURVES OR DIPS.

DIAGNOSTIC TROUBLE CODE B1000.

SUN VISORS MAY NOT STAY IN INTENDED POSITION.

SUBJECT REGARDING CARPET PULLING OUT FROM UNDER FROM THE REAR DOOR SILL PLATE, LEFT OR RIGHT SIDE.

SOME CUSTOMERS MAY COMMENT ON THE TIME IT TAKES THE RIGHT SIDE DOOR GLASS TO DEFOG.

SOME CUSTOMERS MAY COMMENT THAT THE CARPETING IS SEPARATING FROM, OR COMING OUT FROM UNDER THE REAR DOOR OPENING SILL PLATE MOLDING.

SOME CUSTOMERS MAY COMMENT ON WIND NOISE OR A WHISTLE AROUND THE MIRRORS ON THE FRONT DOORS.

INFORMATION ON DIAGNOSING WIND NOISE FROM THE OUTSIDE REARVIEW MIRROR AREA.

SOME CUSTOMERS MAY COMMENT THAT THE POWER WINDOW DOES NOT WORK OR OPERATES SLOWLY.

SOME CUSTOMERS MAY COMMENT THAT THE BLACK PLASTIC HOUSING AROUND THE OUTSIDE REAR VIEW MIRROR TURNS CHALKY OR IS DULL IN COLOR.

CONCERNS OF DOOR HANDLES ON WHITE PAINTED VEHICLES TRUNING YELLOW.

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers.

Underbody Component Corrosion The following information may be helpful when addressing underbody component corrosion with customers.

PARTS AVAILABILITY FOR SUNROOF REPAIRS.

A CONDITION MAY EXIST IN WHICH THE FUEL GAUGE READS INCORRECTLY / FLUCTUATES, LOW FUEL CHIME SOUNDS PREMATURELY.

SOME CUSTOMERS MAY COMMENT ON THE FOLLOWING CONDITIONS: 1) THE FUEL GAUGE READING INCORRECTLY.

CONDITIONS WITH INACCURATE FUEL GAUGE / FLUCTUATES, PREMATURE LOW FUEL CHIME.

SOME CUSTOMERS MAY COMMENT THAT THE FUEL GAUGE READS INCORRECTLY / FLUCTUATES, AND THE LOW FUEL CHIME SOUNDS PREMATURELY.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

This informational bulletin provides the technician with information on what E85 fuel may due to a non E85 vehicle.

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for...

A CONDITION MAY EXIST WHERE THE PRINDLE DISPLAY IS NOT LEGIBLE WHEN MOVING FORM A DARK AREA TO A LIGHTED AREA, WHEN...

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock.

This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock.

POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE.

POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE.

THIS BULLETIN PROVIDES INFORMATION ON TILT STEERING COLUMN STICKING IN PSOTION AND UNABLE TO RELEASE.

THIS BULLETIN PROVIDES INFORMATION ON TWO DIFFERENT CONDITIONS WITH THE TILT STEERING COLUMN STICKING THE EXTREME UP...

CONDITIONS WITH STEERING SHUDDER OR VIBRATION AT LOW SPEED.

TIE ROD SPECIFICATIONS REVISED.

REVISED OUTER TIE ROD END NUT TIGHTENING SPECIFICATION/TIE ROD END JAM NUT TIGHTENING SPECIFICATION ADDED.

RELEASE OF NEW OUTER TIE ROD ENDS FOR SERVICE.

SUBJECT REGARDING FALSE TIRE INFLATION MONITOR SYSTEM (TIM) MESSAGE/LAMO ILLUMINATION (INSTALL NEW ELECTRONIC BRAKE...

THIS BULLETIN IS BEING ISSUED TO REVISE THE FASTENER REQUIREMENTS FOR THE FRONT AND REAR BRAKE CALIPER BRACKET...

CUSTOMERS MAY COMMENT ON FAULTY INDICATORS (SVS, CRUISE, ABS, LOW TIRE ON; A/T, TCC OR CRUISE INOPERATIVE), ERRATIC FUEL...

ABS PUMP RUNNING WHEN NOT NEEDED.

ABS LIGHT ON AND POSSIBLE DIAGNOSTIC TROUBLE CODES.

ABS LIGHT COMING ON AND CODES C1225, C1226, C1232, C1233, C1276 AND/OR C1277 ARE FOUND IN THE EBCM.

INFORMATION REGARDING EXTRA CLIPS IN THE 4T65E TRANSMISSION.

SOME OWNERS MAY COMMENT THAT THE TRANSMISSION RANGE SELECTOR LEVER IS DIFFICULT TO MOVE / SHIFT.

ON SOME VEHICLES, THE TRANSMISSION GEAR RANGE SELECTOR IS DIFFICULT TO SHIFT.

This preliminary bulletin provides a way to aid the technician in diagnosing transmission fluid leaking from the trans...

THE 4T65E AUTOMATIC TRANSMISSION MAY EXHIBIT A CONDITION OF A HARSH GARAGE SHIFT INTO REVERSE OR DRIVE ON A COLD START.

GRIND NOISE OR NO VEHICLE MOVEMENT WHEN SHIFTING INTO DRIVE OR REVERSE.

Vehicle Recalls

This warranty administration bulletin provides information regarding the field action courtesy transportation policy.

BUICK\CHEVROLET\GMC SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.

MANUAL DUAL ZONE FAN AND MODE KNOB REPLACEMENT.

CENTER CONSOLE AND/OR ARMREST STORAGE LID WILL NOT REMAIN CLOSED DUE TO A BROKEN LATCH.

VEHICLES WITH THE CJ2 AUTOMATIC AIR CONDITIONING AND WITHOUT THE U20 CLUSTER WHICH IS THE DRIVER INFORMATION CENTER AND...

SUBJECT REGARDING HVAC TEMPERATURE DIFFERENCE SIDE TO SIDE AND/OR DIAGNOSTIC TROUBLE CODES B0361, B0441 SET.

EXPERIENCING A LACK OF EXPECTED PERFORMANCE OF THE AIR CONDITIONING SYSTEM IN HOT HUMID WEATHER.

HVAC SIDE TO SIDE TEMPERATURE DIFFERENCE.

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

This Preliminary Information communication provides information to the technician about vehicles that have a...

DIAGNOSTIC TROUBLE CODE B 1001 IN BCM AND/OR POWERTRAIN CONTROL MODULE (PCM) SPEAICAL PROCEDURE.

BUICK\CADILLAC\CHEVROLET\GMC\HUMMER\OLDSMOBILE\PONTIAC\SAAB\SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER.

INTERMITTENT CHUGGLE OR FISHBITE ON LIGHT ACCELERATION OR A HIGHWAY SPEEDS WITH NO DIAGNOSTIC TROUBLE CODES (DTCS).

LOW BEAM HEADLAMP BULBS ILLUMINATION REDUCE ABILITY FOR DRIVER TO READ SIGNS WHEN DRIVING AT NIGHT.

INFORMATION ON REFINISHING ALUMINUM WHEELS.

INFORMATION REGARDING FALSE TIRE INFLATION MONITOR SYSTEM.

SUBJECT REGARDING HEAD RESTRAINT HEIGHT INCREASES DURING VEHICLE OPERATION.

SUBJECT REGARDING HEIGHT RESTRAINT HEIGHT INCREASES DURING VEHICLE OPERATION.

This informational bulletin provides information on wheel bearing P/N 13582664 being received new with visible rust and...

This informational bulletin provides information on wheel bearing P/N 13582664 being received new with visible rust and...

BROKEN CONSOLE OR STORAGE COMPARTMENT LID LATCH.