Buick Enclave 2025–2026 — technical service bulletin
Bulletin PIT6411 · NHTSA communication 11020681 · issued Jul 2, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2025–2026
model years
27
vehicle entries
Official summary
This information provides software update information for the K73 Telematics module to correct the symptoms described.
Vehicles covered
- 2025 Buick Enclave
- 2026 Buick Enclave
- 2025 Cadillac CT5
- 2026 Cadillac CT5
- 2025 Cadillac Escalade
- 2026 Cadillac Escalade
- 2025 Cadillac Escalade Esv
- 2026 Cadillac Escalade Esv
- 2025 Cadillac Escalade IQ
- 2026 Cadillac Escalade IQ
- 2025 Chevrolet Blazer EV
- 2026 Chevrolet Blazer EV
- 2025 Chevrolet Equinox
- 2026 Chevrolet Equinox
- 2025 Chevrolet Equinox EV
- 2026 Chevrolet Equinox EV
- 2025 Chevrolet Suburban 1500
- 2026 Chevrolet Suburban 1500
- 2025 Chevrolet Tahoe
- 2026 Chevrolet Tahoe
- 2025 GMC Acadia
- 2026 GMC Acadia
- 2025 GMC Hummer EV Pickup
- 2026 GMC Hummer EV Pickup
- 2026 GMC Hummer EV SUV
- 2025 GMC Terrain
- 2026 GMC Terrain
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.