This informational bulletin explains the difference in AFM and DFM engines and what is and is not...
Chevrolet technical service bulletin 20NA038 for 2014, 2017-2021 Chevrolet Silverado 1500, 2015-2021 Chevrolet Tahoe and 2014, 2019-2021 GMC Sierra 1500 and others.
- Bulletin number
- 20NA038
- Component
- Equipment: other: owners/service/other manual
- Summary
- This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
Vehicles covered
- Chevrolet Silverado 1500 2014, 2017-2021 201420172018201920202021
- Chevrolet Tahoe 2015-2021 2015201620172018201920202021
- GMC Sierra 1500 2014, 2019-2021 2014201920202021
- Chevrolet Suburban 2015-2021 2015201620172018201920202021
- Chevrolet Corvette 2014-2021 20142015201620172018201920202021
- GMC Yukon 2015-2021 2015201620172018201920202021
- Chevrolet Silverado 2500 2015-2018, 2020-2021 201520162017201820202021
- Chevrolet Camaro 2016-2021 201620172018201920202021
- GMC Yukon XL 2015-2021 2015201620172018201920202021
- Cadillac CTS 2016-2019 2016201720182019
- GMC Sierra 2500 2015-2018, 2020-2021 201520162017201820202021
- Cadillac Escalade 2015-2020 201520162017201820192020
- Chevrolet Express 2018-2021 2018201920202021
- Cadillac Escalade ESV 2015-2021 2015201620172018201920202021
- GMC Savana 2018-2021 2018201920202021
- GMC Sierra Denali 2015-2018 2015201620172018
- Cadillac CT6 2016-2020 20162017201820192020
- Cadillac Escalade Na 2021 2021
- Chevrolet 3500 2020 2020
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