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Service bulletin SB21-039-15

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10058536
Published by NHTSA2015-10-06
Manufacturer's numberSB21-039-15
Manufacturer's date2015-06-04
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

RAM: MALFUNCTION INDICATOR LAMP (MIL) IS ILLUMINATING DUE TO SEVERAL DIAGNOSIC TROUBLE CODES (DTCS) AND PROCEDURE PROVIDED FOR REPROGRAMMING TRANSMISSION CONTROL MODULE WITH THE NEWEST SOFTWARE *CN

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Electrical system, Transmission and driveline, Automatic transmission, Software

Vehicles listed
RAM PROMASTER2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.