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Service bulletins for the 1994 Buick Century

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

30 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
1300890092023-12-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
010601002A2003-03-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. REVISED PISTON PIN REMOVAL / INSTALLATION PROCEDURE. *TT
990604005A2001-05-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY COMMENT ON DRIVEABILITY SYMPTONS OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE DUE TO CLOGGED FUEL INJECTORS. *TT
876002A2000-12-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME V6 ENGINES MAY, ON A VERY INFREQUENT BASIS, HAVE AN OIL ODOR CONDITION THAT IS GENERALLY ENCOUNTERED AFTER THE ENGINE'S OIL HAS BEEN CHANGED.TYPICALLY THE ODOR LASTS APPROXIMATELY 1000 MILES AFTER THE CHANGE OF OIL AND THEN DOES NOT REAPPEAR UNTIL THE NEXT CHANGE OF OIL. *TT
9906040051999-04-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY EXPERIENCE A DRIVEABILITY SYMPTOM OF LONG OR HARD STARTS, CHUGGLE, ROUGH IDLE AND LIGHT OR INTERMITTENT MISFIRE. *TT
980181998-10-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. PROM CALIBRATION REPLACEMENT FOR NOX EMISSIONS. *YC
98576124A1998-08-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. COMMENTS ON A TICKING TYPE NOISE THAT BEGINS SHORTLY AFTER COLD ENGINE START-UP AND GRADUALLY DIMINISHES AS THE ENGINE WARMS UP. *YC
98876121A1998-06-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. VEHICLES MAY EXHIBIT A CLATTERING NOISE AT IDLE SPEED ORIGINATING FROM THE TIMING CHAIN AND FRONT COVER AREA. *YC
7760011997-11-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION CONCERNING ENGINE KNOCK/RATTLE OR TAP NOISE BEFORE ENGINE HAS REACHED OPERATING TEMPERATURE OR UNDER LIGHT LOAD CONDITIONS AT OPERATING TEMPERATURE (REPLACE PISTON AND/OR ROD ASSEMBLIES). AK
7760011997-06-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. KNOCK, RATTLE OR TAP NOISE FROM THE ENGINE BEFORE THE ENGINE HAS REACHED OPERATING TEMPERATURE OR UNDER LIGHT LOAD CONDITIONS AT OPERATING TEMPERATURE KNOCK, RATTLE OR TAP NOISE FROM THE ENGINE BEFORE THE ENGINE HAS REACHED OPERATING TEMPERATURE OR UNDER LIGHT LOAD CONDITIONS AT RATURE (REPLACE PISTON AND/OR ROD ASSEMBLIES). *TW
5761241996-04-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. COLD ENGINE TICK OR RATTLE AFTER START-UP (REPLACE PISTON/PIN ASSEMBLY). *SD
5366011995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. UNKNOWN
4761351995-11-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL LEAK AT THE ROCKER COVER. *TW
4366041995-03-06. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. EXHAUST MANIFOLD SEAL SQUEAK. *TW

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.