RAM 1500 2021 — technical service bulletin
Bulletin 0808621 · NHTSA communication 10230124 · issued May 15, 2021
Technical service bulletin
communication type
Visibility
component
2021
model years
1
vehicle entries
Official summary
Flash: Driver Door Module (DDM) and Passenger Door Module (PDM) Updates This bulletin involves reprogramming the DDM and PDM with the latest available software. This software is for vehicles on the RRT VIN List is to improve the function and reliability of the power windows operation.
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.