WenmarOpen by Wenmar Pro

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: Equipment and accessories are shown. Show all

Bulletins, newest first
Recalls2024-01-08. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Vehicle Recalls
19NA2732020-01-21. Service bulletin. EQUIPMENT; ELECTRICAL SYSTEM. This informational bulletin provides information for dealers/technicians on Procedures to Unlock Delco Radio with Theftlock.
PIC4696E2019-12-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable. E version update is to add administrative details.
PIC4696D2019-10-15. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable.
PIP4723C2019-04-08. Service bulletin. EQUIPMENT; TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM:SOFTWARE. This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and Vehicle Data Recorder tools, giving website address and step by step instructions to complete the update.
PIC4696C2018-06-18. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
30972004-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC SIDE TO SIDE TEMPERATURE DIFFERENCE. *SC
0626022002-11-08. Service bulletin. EQUIPMENT:ELECTRICAL. VEHICLES WITH THE CJ2 AUTOMATIC AIR CONDITIONING AND WITHOUT THE U20 CLUSTER WHICH IS THE DRIVER INFORMATION CENTER AND THE CJ2 AUTOMATIC AIR CONDITIONER DISPLAYS THE CELSIUS AND NOT FAHRENHEIT. *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
980608980011998-08-28. Service bulletin. EXTERIOR LIGHTING; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. SUBJECT ON HEADLAMP AIMING OWNER MANUAL INFORMATION. *YC
970221998-08-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. INFORMATION ON MANUAL CLIMATE CONTROL MODE SELECTOR. *YC

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