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Service bulletins for the 1998 Buick Regal

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.

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

By type

By component

By trouble code

Only bulletins with component: Heating and air conditioning are shown. Show all

Bulletins, newest first
30972004-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC SIDE TO SIDE TEMPERATURE DIFFERENCE. *SC
016502004-06-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT. MANUAL DUAL ZONE FAN AND MODE KNOB REPLACEMENT. SERVICE VME. *TT
030844005B2004-03-04. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:REAR WINDOW. POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE. *TT
0201390022002-05-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SOME CUSTOMERS MAY COMMENT ON THE TIME IT TAKES THE RIGHT SIDE DOOR GLASS TO DEFOG. *SLC
0201390012002-04-02. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SUBJECT REGARDING HVAC TEMPERATURE DIFFERENCE SIDE TO SIDE AND/OR DIAGNOSTIC TROUBLE CODES B0361, B0441 SET. *TT
9901380052000-03-01. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. EXPERIENCING A LACK OF EXPECTED PERFORMANCE OF THE AIR CONDITIONING SYSTEM IN HOT HUMID WEATHER. *TT
970221998-08-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. INFORMATION ON MANUAL CLIMATE CONTROL MODE SELECTOR. *YC
971217970221998-04-20. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SUBJECT ON HVAC MANUAL CLIMATE CONTROL MODE SELECTOR FIRST PHASE OWNER NOTIFICATION LETTER MAILING. *YC
97110197022J1998-03-30. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. CUSTOMER SATISFACTION CAMPAIGN ON HVAC MANUAL CLIMATE CONTROL MODE SELECTOR. *YC

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