Chevrolet Colorado 2016–2021 — technical service bulletin

Bulletin 20NA110 · NHTSA communication 10183168 · issued Oct 13, 2020

Technical service bulletin

communication type

Fuel System, Diesel

component

2016–2021

model years

vehicle entries

Official summary

This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

Vehicles covered

2016 Chevrolet Colorado
2017 Chevrolet Colorado
2018 Chevrolet Colorado
2019 Chevrolet Colorado
2020 Chevrolet Colorado
2021 Chevrolet Colorado
2017 Chevrolet Cruze
2018 Chevrolet Cruze
2019 Chevrolet Cruze
2018 Chevrolet Equinox
2019 Chevrolet Equinox
2017 Chevrolet Express
2018 Chevrolet Express
2019 Chevrolet Express
2020 Chevrolet Express
2021 Chevrolet Express
2017 Chevrolet Silverado 1500
2018 Chevrolet Silverado 1500
2019 Chevrolet Silverado 1500
2020 Chevrolet Silverado 1500
2021 Chevrolet Silverado 1500
2017 Chevrolet Silverado 2500
2018 Chevrolet Silverado 2500
2019 Chevrolet Silverado 2500
2020 Chevrolet Silverado 2500
2021 Chevrolet Silverado 2500
2019 Chevrolet Silverado 4500
2020 Chevrolet Silverado 4500
2016 GMC Canyon
2017 GMC Canyon
2018 GMC Canyon
2019 GMC Canyon
2020 GMC Canyon
2021 GMC Canyon
2017 GMC Savana
2018 GMC Savana
2019 GMC Savana
2020 GMC Savana
2021 GMC Savana
2020 GMC Sierra 1500
2021 GMC Sierra 1500
2017 GMC Sierra 2500
2018 GMC Sierra 2500
2019 GMC Sierra 2500
2020 GMC Sierra 2500
2021 GMC Sierra 2500
2017 GMC Sierra Denali
2018 GMC Sierra Denali
2019 GMC Sierra Denali
2017 GMC Terrain
2018 GMC Terrain
2019 GMC Terrain
2020 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.