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Service bulletins for the 2018 Buick Enclave

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.

1027 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

By topic

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
16NA3382018-05-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION; ENGINE. This Bulletin provides guidelines for Dealers required to contact the PQC for engine or transmission assembly replacement and explains the PQC process, GWM Transaction submission, vehicle service record retention and proper handling of assembly returns.
PIP5546C2018-03-12. Service bulletin. POWER TRAIN. This Preliminary information communicates if a slight shudder is felt during a shift at speeds of 40 MPH or below to perform a transmission fluid drain and fill.
PIP5546B2018-03-12. Service bulletin. POWER TRAIN. This Preliminary information communicates if a slight shudder is felt during a shift at speeds of 40 MPH or below to perform a transmission fluid drain and fill.
PIP5546A2018-02-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. This Preliminary information communicates if a slight shudder is felt during a shift at speeds of 40 MPH or below to perform a trans fluid drain and fill and to perfrom a cooler flow test to flush the cooler.
PIP5512A2018-01-16. Service bulletin. POWER TRAIN. This Preliminary information communicates that the valve body assembly for any vehicle equipped with a 9T50/60 transmission assembly equipped with the ETRS will require engineering review for possible complete transmission assembly replacement if diagnoses leads to be a valve body or ETRSconcern.
PIP5508A2017-11-14. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN. This Preliminary Information communication advises the technician that the Product Quality Center has a part restriction for the T87A Transmission Control Module. The dealer technician is advised to call the GM Product Quality Center for further assistance.

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