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Service bulletins for the 2012 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.

1749 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Hybrid and electric drive are shown. Show all

Bulletins, newest first
PIC5626A2023-12-11. Service bulletin. HYBRID PROPULSION SYSTEM. eAssist Service Charging System.
PIC5520K2023-12-11. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE. eAssist Generator Control And Battery Module Exchange Process And Order Instructions.
PIC5520J2023-12-11. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE; ELECTRICAL SYSTEM. eAssist Generator Control And Battery Module Exchange Process And Order Instructions.
PIC5520H2023-12-11. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY:THERMAL MANAGEMENT; ELECTRICAL SYSTEM. eAssist Generator Control And Battery Module Exchange Process And Order Instructions.
PIC5520G2023-12-11. Service bulletin. ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY THERMAL:MANAGEMENT:SOFTWARE; ELECTRICAL SYSTEM. eAssist Generator Control And Battery Module Exchange Process And Order Instructions.
1200890082023-12-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:PROPULSION SYSTEM:HYBRID MANAGEMENT. High Voltage Battery Section Serviceability - Essential Tool EL-50332
PIC5520G2017-08-15. Service bulletin. ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:PROPULSION SYSTEM:TRACTION BATTERY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. This Preliminary Information communication advises the technician that the Drive Motor Generator Battery Module and Drive Motor Generator Battery Sections for the 2012 - 2013 Buick LaCrosse, Buick Regal, and 2012 - 2013 Chevrolet Malibu ECO with eAssist are being placed on restriction through the General Motors Technical Assistance Center. Dealer will need to contact General Motors Technical Assistance Center for further assistance.
PIP-4920K2013-07-10. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE; HYBRID PROPULSION SYSTEM: INVERTER. GENERAL MOTORS: TAC PART RESTRICTION FOR THE BAS+ (HYBRID) EASSIST. *KB UPDATED 05/16/2014 *JS

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