RAM 1500 2020 — technical service bulletin
Bulletin 1806220 · NHTSA communication 10221870 · issued Aug 13, 2020
Technical service bulletin
communication type
Power Train
component
2020
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. The customer may comment on one or more of the following: ECO light does not come on the cluster during Multiple Displacement System (MDS). 2-3 kph (1.3-1.9 mph) difference between cruise set speed and the actual vehicle speed.
Vehicles covered
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.