RAM 3500 2013 — technical service bulletin
Bulletin 21-005-14 · NHTSA communication 10136957 · issued Feb 15, 2014
Technical service bulletin
communication type
Power Train
component
2013
model years
2
vehicle entries
Official summary
Flash: Transmission Shift Enhancements This bulletin involves selectively erasing and reprogramming the Transmission Control Module (TCM) with new software. The customer may indicate that they may have experienced any of the following: ? Harsh 2 - 1 downshift ? Delayed shifts while shifting from neutral to drive, neutral to reverse or park to reverse ? Audible squawk noise while the truck is shifting from 4-3 ? Poor vehicle acceleration in first gear while fully loaded In addition to any of the previous, dealers may identify a P253D "PTO SENSE CIRCUIT HIGH? stored in the TCM?s memory.
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.