RAM 1500 2018–2020 — technical service bulletin
Bulletin D1902 · NHTSA communication 10223562 · issued Jun 3, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018–2020
model years
21
vehicle entries
Official summary
Fast Feedback Program - 6.7L Cummins Engine - 2019 & 2020 HD Ram & 6.7L Cummins Diesel Engine Control Module (ECM) - 2018 Ram- All Models (Rev. E)
Vehicles covered
- 2018 RAM 1500
- 2019 RAM 1500
- 2020 RAM 1500
- 2018 RAM 2500
- 2019 RAM 2500
- 2020 RAM 2500
- 2018 RAM 3500
- 2019 RAM 3500
- 2020 RAM 3500
- 2018 RAM 4500
- 2019 RAM 4500
- 2020 RAM 4500
- 2018 RAM 5500
- 2019 RAM 5500
- 2020 RAM 5500
- 2018 RAM Promaster
- 2019 RAM Promaster
- 2020 RAM Promaster
- 2018 RAM Promaster City
- 2019 RAM Promaster City
- 2020 RAM Promaster City
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.