Chevrolet 3500 2017–2022 — technical service bulletin
Bulletin 21NA113 · NHTSA communication 10214207 · issued Jan 10, 2022
Technical service bulletin
communication type
Engine and Engine Cooling
component
2017–2022
model years
27
vehicle entries
Official summary
This technical bulletin provides a procedure to perform a learn procedure for the turbo actuator.
Vehicles covered
- 2019 Chevrolet 3500
- 2020 Chevrolet 3500
- 2020 Chevrolet 5500HD
- 2019 Chevrolet 6500
- 2017 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2017 Chevrolet Silverado 2500
- 2018 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 2500
- 2020 Chevrolet Silverado 2500
- 2021 Chevrolet Silverado 2500
- 2022 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 4500
- 2020 Chevrolet Silverado 4500
- 2021 Chevrolet Silverado 4500
- 2022 Chevrolet Silverado 4500
- 2019 Chevrolet Silverado 6500
- 2017 GMC Sierra 2500
- 2018 GMC Sierra 2500
- 2019 GMC Sierra 2500
- 2020 GMC Sierra 2500
- 2021 GMC Sierra 2500
- 2022 GMC Sierra 2500
- 2019 GMC Sierra 3500
- 2020 GMC Sierra 3500
- 2017 GMC Sierra Denali
- 2018 GMC Sierra Denali
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.