RAM 2500 2025 — technical service bulletin
Bulletin S2523000020 · NHTSA communication 11018277 · issued May 7, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
4
vehicle entries
Official summary
Diagnostic Trouble Code (DTC) U300A-29
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.