RAM 1500 2016 — technical service bulletin
Bulletin 21-017-16 · NHTSA communication 10139970 · issued Apr 22, 2016
Technical service bulletin
communication type
Electrical System
component
2016
model years
1
vehicle entries
Official summary
Flash: Transmission Shift And Drivability Enhancements This bulletin involves reprogramming the Transmission Control Module (TCM) with the latest available software. Some customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation, a technician may find the following Diagnostic Trouble Code (DTC) stored in the TCM memory: · P0731 - Gear Ratio Error In 1st. The following enhancements are included in the software update: · Improved general shift quality. · Improved 7th gear upshift timing. · Downhill engine braking improvements.
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.