RAM Promaster 2023 — technical service bulletin
Bulletin 21-044-24 · NHTSA communication 11005078 · issued Jul 17, 2024
Technical service bulletin
communication type
Power Train
component
2023
model years
1
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● P1DCD-00 - TCM Monitoring Processor Performance Multiple Clutches Locked Up
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.