WenmarOpen by Wenmar Pro

Service bulletin 97121797022

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id54475
Published by NHTSA1998-04-20
Manufacturer's number97121797022
Manufacturer's date1997-12-17
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

SUBJECT ON HVAC MANUAL CLIMATE CONTROL MODE SELECTOR FIRST PHASE OWNER NOTIFICATION LETTER MAILING. *YC

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
BUICK CENTURY1997, 1998
BUICK REGAL1996, 1997, 1998

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20000022000-01-04. Visual System
99V3480001999-12-16. VISIBILITY:WINDSHIELD WIPER/WASHER:LINKAGES

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
30972004-11-05. Service bulletin. HVAC SIDE TO SIDE TEMPERATURE DIFFERENCE. *SC
016502004-06-04. Service bulletin. MANUAL DUAL ZONE FAN AND MODE KNOB REPLACEMENT. SERVICE VME. *TT
030844005B2004-03-04. Service bulletin. POOR RADIO RECEPTION OR RADIO STATIC/ INCREASED INTERFERENCE WITH REAR WINDOW DEFOGGER ON OR SOME REAR WINDOW DEFOGGER GRIDS MAY BE INOPERATIVE. *TT
0308670042003-09-30. Service bulletin. PARTS AVAILABILITY FOR SUNROOF REPAIRS. *TT
0201390022002-05-21. Service bulletin. SOME CUSTOMERS MAY COMMENT ON THE TIME IT TAKES THE RIGHT SIDE DOOR GLASS TO DEFOG. *SLC
0201390012002-04-02. Service bulletin. SUBJECT REGARDING HVAC TEMPERATURE DIFFERENCE SIDE TO SIDE AND/OR DIAGNOSTIC TROUBLE CODES B0361, B0441 SET. *TT
1110012002-03-01. Service bulletin. INFORMATION ON DIAGNOSING WIND NOISE FROM THE OUTSIDE REARVIEW MIRROR AREA. *TT
0101390012001-10-22. Service bulletin. SUBJECT REGARDING DIAGNOSIS OF HVAC DTC'S B0361, B0363, B0365 AND B0367. NLM
731066A2000-12-27. Service bulletin. SOME OWNERS MAY COMMENT THAT THE DOOR GLASS STICKS IN THE FULL UP POSITION. THIS CONDITION MAINLY HAPPENS IN WARM WEATHER. *TT
0008510012000-12-05. Service bulletin. SOME CUSTOMERS MAY COMMENT THAT THE BLACK PLASTIC HOUSING AROUND THE OUTSIDE REAR VIEW MIRROR TURNS CHALKY OR IS DULL IN COLOR. *TT