Chevrolet Colorado 2010–2021 — technical service bulletin
Bulletin 19NA237 · NHTSA communication 10183176 · issued Oct 27, 2020
Technical service bulletin
communication type
Equipment
component
2010–2021
model years
60
vehicle entries
Official summary
This informational bulletin explains how to identify possible DEF contamination.
Vehicles covered
- 2016 Chevrolet Colorado
- 2017 Chevrolet Colorado
- 2018 Chevrolet Colorado
- 2019 Chevrolet Colorado
- 2020 Chevrolet Colorado
- 2021 Chevrolet Colorado
- 2014 Chevrolet Cruze
- 2015 Chevrolet Cruze
- 2016 Chevrolet Cruze
- 2017 Chevrolet Cruze
- 2018 Chevrolet Cruze
- 2019 Chevrolet Cruze
- 2018 Chevrolet Equinox
- 2019 Chevrolet Equinox
- 2010 Chevrolet Express
- 2011 Chevrolet Express
- 2012 Chevrolet Express
- 2013 Chevrolet Express
- 2014 Chevrolet Express
- 2015 Chevrolet Express
- 2016 Chevrolet Express
- 2017 Chevrolet Express
- 2018 Chevrolet Express
- 2020 Chevrolet Express
- 2021 Chevrolet Express
- 2010 Chevrolet Silverado 1500
- 2011 Chevrolet Silverado 1500
- 2012 Chevrolet Silverado 1500
- 2013 Chevrolet Silverado 1500
- 2014 Chevrolet Silverado 1500
- 2017 Chevrolet Silverado 1500
- 2018 Chevrolet Silverado 1500
- 2020 Chevrolet Silverado 1500
- 2021 Chevrolet Silverado 1500
- 2010 Chevrolet Silverado 2500
- 2011 Chevrolet Silverado 2500
- 2012 Chevrolet Silverado 2500
- 2013 Chevrolet Silverado 2500
- 2014 Chevrolet Silverado 2500
- 2015 Chevrolet Silverado 2500
- 2016 Chevrolet Silverado 2500
- 2017 Chevrolet Silverado 2500
- 2018 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 2500
- 2020 Chevrolet Silverado 2500
- 2021 Chevrolet Silverado 2500
- 2019 Chevrolet Silverado 3500
- 2020 Chevrolet Silverado 3500
- 2021 Chevrolet Silverado 3500
- 2019 Chevrolet Silverado 4500
- 2016 GMC Canyon
- 2017 GMC Canyon
- 2018 GMC Canyon
- 2019 GMC Canyon
- 2020 GMC Canyon
- 2021 GMC Canyon
- 2010 GMC Savana
- 2011 GMC Savana
- 2012 GMC Savana
- 2013 GMC Savana
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.