Buick Enclave 2026 — technical service bulletin
Bulletin PIP6099 · NHTSA communication 11027888 · issued Jan 20, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2026
model years
22
vehicle entries
Official summary
This P/I is advising that the TCM should not be replaced for DTC P16F4 and to request FSE assistance for a TCM data pull.
Vehicles covered
- 2026 Buick Enclave
- 2026 Buick Envision
- 2026 Cadillac Escalade
- 2026 Cadillac Escalade Esv
- 2026 Cadillac Escalade Esv IQ
- 2026 Cadillac Lyriq
- 2026 Cadillac Optiq
- 2026 Cadillac Vistiq
- 2026 Chevrolet Blazer EV
- 2026 Chevrolet Brightdrop 400
- 2026 Chevrolet Brightdrop 600
- 2026 Chevrolet Equinox
- 2026 Chevrolet Equinox EV
- 2026 Chevrolet Silverado EV
- 2026 Chevrolet Suburban 1500
- 2026 Chevrolet Tahoe
- 2026 Chevrolet Traverse
- 2026 GMC Acadia
- 2026 GMC Sierra EV
- 2026 GMC Terrain
- 2026 GMC Yukon
- 2026 GMC Yukon XL
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.