Buick Enclave 2014–2019 — technical service bulletin
Bulletin 18NA358 · NHTSA communication 10212553 · issued Dec 6, 2021
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2014–2019
model years
46
vehicle entries
Official summary
This service bulletin provides a procedure to replace the upper and lower valve body housings to correct customer concerns of launch shudder, 2-3 Upshift or 3-2 Downshift concerns.
Vehicles covered
- 2014 Buick Enclave
- 2015 Buick Enclave
- 2016 Buick Enclave
- 2017 Buick Enclave
- 2014 Buick Lacrosse
- 2015 Buick Lacrosse
- 2016 Buick Lacrosse
- 2014 Buick Regal
- 2015 Buick Regal
- 2016 Buick Regal
- 2017 Buick Regal
- 2014 Cadillac SRX
- 2015 Cadillac SRX
- 2016 Cadillac SRX
- 2014 Cadillac XTS
- 2015 Cadillac XTS
- 2016 Cadillac XTS
- 2017 Cadillac XTS
- 2018 Cadillac XTS
- 2019 Cadillac XTS
- 2014 Chevrolet Equinox
- 2015 Chevrolet Equinox
- 2016 Chevrolet Equinox
- 2017 Chevrolet Equinox
- 2014 Chevrolet Impala
- 2015 Chevrolet Impala
- 2016 Chevrolet Impala
- 2017 Chevrolet Impala
- 2018 Chevrolet Impala
- 2019 Chevrolet Impala
- 2014 Chevrolet Malibu
- 2015 Chevrolet Malibu
- 2014 Chevrolet Traverse
- 2015 Chevrolet Traverse
- 2016 Chevrolet Traverse
- 2017 Chevrolet Traverse
- 2014 GMC Acadia
- 2015 GMC Acadia
- 2016 GMC Acadia
- 2017 GMC Acadia
- 2018 GMC Acadia
- 2019 GMC Acadia
- 2014 GMC Terrain
- 2015 GMC Terrain
- 2016 GMC Terrain
- 2017 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.