RAM 1500 2016 — technical service bulletin
Bulletin 21-010-20 · NHTSA communication 10173369 · issued Feb 15, 2020
Technical service bulletin
communication type
Power Train
component
2016
model years
1
vehicle entries
Official summary
Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set:P0731 - Gear Ratio Error In 1st. The customer may describe the following condition:Rough or harsh shifting during coastdown to a stop (might also be described as a 2-1 bump)(Sales Code EZH). In addition, the following software enhancements are also available:2-1 coast down improvement(Sa
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.