This informational bulletin explains the difference in AFM and DFM engines and what is and is not...
Chevrolet technical service bulletin 20NA038 for 2014, 2018-2020 Chevrolet Silverado 1500, 2015-2020 Chevrolet Tahoe and 2014, 2019-2020 GMC Sierra 1500 and others.
- Bulletin number
- 20NA038
- Component
- Fuel system, diesel
- 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, 2018-2020 2014201820192020
- Chevrolet Tahoe 2015-2020 201520162017201820192020
- GMC Sierra 1500 2014, 2019-2020 201420192020
- Chevrolet Silverado 2017 2017
- Chevrolet Suburban 2015-2020 201520162017201820192020
- Chevrolet Corvette 2014-2020 2014201520162017201820192020
- GMC Yukon 2015-2020 201520162017201820192020
- Chevrolet Silverado 2500 2015-2016, 2018, 2020 2015201620182020
- GMC Sierra 2017 2017
- Chevrolet Camaro 2016-2020 20162017201820192020
- GMC Yukon XL 2015-2020 201520162017201820192020
- Cadillac CTS 2016-2019 2016201720182019
- GMC Sierra 2500 2015-2016, 2018, 2020 2015201620182020
- Cadillac Escalade 2015-2020 201520162017201820192020
- Chevrolet Express 2018-2020 201820192020
- Cadillac Escalade ESV 2015-2020 201520162017201820192020
- GMC Savana 2018-2020 201820192020
- GMC Sierra Denali 2015-2016, 2018 201520162018
- Cadillac CT6 2016-2020 20162017201820192020
- Chevrolet 3500 2020 2020
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