RAM 1500 2020 — technical service bulletin
Bulletin 1801020REVA · NHTSA communication 10221871 · 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 illuminate in the cluster when Multiple Displacement System (MDS) is active(EMEA, LATAM and APAC). 2-3 kph (1.3-1.9 mph) difference between cruise set speed and the actual vehicle speed(EMEA, LATAM and APAC). Bump sensation during a coast down with light acceleration. Abnormal vibration when accelerating lightly during stop and go driving conditions.
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.