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Service bulletin 21-005-14

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 id10136957
Published by NHTSA2018-05-21
Manufacturer's number21-005-14
Manufacturer's date2014-02-15
NHTSA componentPOWER TRAIN

NHTSA's 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.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Trouble codes named

P253D

Vehicles listed
RAM 35002013
RAM 45002013

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

Recalls for the same vehicles and component
20176592017-12-21. Powertrain
17V8210002017-12-20. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
1023072025-01-06. Service bulletin. GEAR - REACTION SUN
1023872025-01-04. Service bulletin. SEAL - OUTPUT SHAFT
1023892025-01-04. Service bulletin. SEAL - OUTPUT SHAFT
1012322024-11-07. Service bulletin. Plate - Planetary
18030142023-02-21. Service bulletin. 6.7L Diagnostic and System Improvements
18001142023-02-21. Service bulletin. Powertrain Diagnostic And System Enhancements
S1623000028 Rev.2023-02-13. Service bulletin. Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
18030142023-01-17. Service bulletin. reprogramming the Powertrain Control Module (PCM) with new software.
18030142023-01-17. Service bulletin. Diagnostic and System Improvements
S17090000102023-01-09. Service bulletin. Customer complaints may include abnormal engine noise, rough idle, lack of power, misfire. Upon investigation, it may be found that there is excessive camshaft lobe wear/lifter wear (roller failure) on one or more cam lobes and that camshaft/lifter replacement is necessary.