Chevrolet Express 2015–2020 — technical service bulletin

Bulletin 20NA142 · NHTSA communication 10187759 · issued Jan 11, 2021

Technical service bulletin

communication type

Engine and Engine Cooling

component

2015–2020

model years

vehicle entries

Official summary

This Technical bulletin provides a repair to correct a condition of Shudder/Surging While Driving.

Vehicles covered

2015 Chevrolet Express
2016 Chevrolet Express
2017 Chevrolet Express
2018 Chevrolet Express
2019 Chevrolet Express
2020 Chevrolet Express
2017 Chevrolet Silverado 1500
2018 Chevrolet Silverado 1500
2019 Chevrolet Silverado 1500
2020 Chevrolet Silverado 1500
2015 Chevrolet Silverado 2500
2016 Chevrolet Silverado 2500
2017 Chevrolet Silverado 2500
2018 Chevrolet Silverado 2500
2019 Chevrolet Silverado 2500
2020 Chevrolet Silverado 2500
2019 Chevrolet Silverado 3500
2019 Chevrolet Silverado 4500
2015 Chevrolet Suburban
2016 Chevrolet Suburban
2017 Chevrolet Suburban
2018 Chevrolet Suburban
2019 Chevrolet Suburban
2020 Chevrolet Suburban
2015 Chevrolet Tahoe
2016 Chevrolet Tahoe
2017 Chevrolet Tahoe
2018 Chevrolet Tahoe
2019 Chevrolet Tahoe
2020 Chevrolet Tahoe
2015 GMC Savana
2016 GMC Savana
2017 GMC Savana
2018 GMC Savana
2019 GMC Savana
2020 GMC Savana
2020 GMC Sierra 1500
2015 GMC Sierra 2500
2016 GMC Sierra 2500
2017 GMC Sierra 2500
2018 GMC Sierra 2500
2019 GMC Sierra 2500
2020 GMC Sierra 2500
2015 GMC Sierra Denali
2016 GMC Sierra Denali
2017 GMC Sierra Denali
2018 GMC Sierra Denali
2019 GMC Sierra Denali
2015 GMC Yukon
2016 GMC Yukon
2017 GMC Yukon
2018 GMC Yukon
2019 GMC Yukon
2020 GMC Yukon
2015 GMC Yukon XL
2016 GMC Yukon XL
2017 GMC Yukon XL
2018 GMC Yukon XL
2019 GMC Yukon XL
2020 GMC Yukon XL

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.