Buick Enclave 2025–2026 — technical service bulletin
Bulletin PIT6478 · NHTSA communication 11027936 · issued Jan 28, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2025–2026
model years
15
vehicle entries
Official summary
This Preliminary information communicates to the field about a normal condition about a message that appears when using a NFC card to start the vehicle when a key fob or a digital key device is not present.
Vehicles covered
- 2026 Buick Enclave
- 2026 Cadillac Celestiq
- 2026 Cadillac Escalade Esv IQ
- 2026 Cadillac Escalade Esv Iql
- 2025 Cadillac Lyriq
- 2026 Cadillac Lyriq
- 2026 Cadillac Optiq
- 2026 Cadillac Vistiq
- 2026 Chevrolet Silverado EV
- 2026 Chevrolet Tahoe
- 2026 Chevrolet Traverse
- 2026 GMC Acadia
- 2026 GMC Sierra EV
- 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.