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Service bulletin PIP-4983

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 id10043331
Published by NHTSA2012-03-14
Manufacturer's numberPIP-4983
Manufacturer's date2011-12-01
NHTSA componentELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

NHTSA's summary

BUICK: CHECKING DATE CODE AND THE TESTING OF HIGH VOLTAGE INTERLOCK LOOP (HVIL) COVER RESISTANCE ON CERTAIN MODEL YEAR VEHICLES. *PE

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

Electrical system, Alternator

Vehicles listed
BUICK LACROSSE2012
BUICK REGAL2012

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

Other bulletins for the same vehicles and component
PIP4989D2017-08-15. Service bulletin. This Preliminary Information communication provides the technician with the steps to diagnose and repair a vehicle with a broken, noisy, worn or misaligned Drive Motor Generator belt resulting in a no charge concern. Dealer will follow the instructions to replace the belt if broken and use a laser belt alignment tool to correctly align the new belt. Inspect the drive belt tensioner strut assembly to ensure that it is installed correctly. If the strut is upside down remove and install correctly.
PI14042017-08-15. Service bulletin. This preliminary informational bulletin provides a diagnostic tip for low line pressure or pressure regulator valve stuck after transmission service pump cover replacement.
PIC5520J2016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC5520H2016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC5520G2016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
PIC5520F2016-06-22. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
13142B2016-06-09. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
13142A2016-06-09. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
131422016-06-09. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.
13136C2016-06-09. Service bulletin. SUMMARY TO BE PROVIDED ON A FUTURE DATE.