Buick Enclave 2025–2026 — technical service bulletin
Bulletin PIP6101A · NHTSA communication 11029264 · issued Mar 3, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2025–2026
model years
28
vehicle entries
Official summary
The document makes technicians aware of a valvetrain tick noise that is created by one or more soft hydraulic valve lash adjusters. The soft lash adjuster concern is due to debris from the valve rocker arm, entering into the lash adjuster. The document instructs the technician to replace all of the lash adjusters and rocker arms in the entire engine if any soft lash adjusters are found.
Vehicles covered
- 2025 Buick Enclave
- 2026 Buick Enclave
- 2025 Buick Envista
- 2026 Buick Envista
- 2025 Cadillac CT4
- 2026 Cadillac CT4
- 2025 Cadillac CT5
- 2026 Cadillac CT5
- 2025 Cadillac XT4
- 2026 Cadillac XT4
- 2025 Cadillac XT5
- 2026 Cadillac XT5
- 2025 Cadillac XT6
- 2026 Cadillac XT6
- 2025 Chevrolet Blazer
- 2026 Chevrolet Blazer
- 2025 Chevrolet Colorado
- 2026 Chevrolet Colorado
- 2025 Chevrolet Silverado 1500
- 2026 Chevrolet Silverado 1500
- 2025 Chevrolet Traverse
- 2026 Chevrolet Traverse
- 2025 GMC Acadia
- 2026 GMC Acadia
- 2025 GMC Canyon
- 2026 GMC Canyon
- 2025 GMC Sierra 1500
- 2026 GMC Sierra 1500
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.