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Service bulletin SIL 34-1K2K-19 R

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 id10171370
Published by NHTSA2020-02-18
Manufacturer's numberSIL 34-1K2K-19 R
Manufacturer's date2020-01-06
NHTSA componentPOWER TRAIN

NHTSA's summary

Details a procedure for trouble shooting the check transmission MIL based on DTC P2789

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

P2789

Vehicles listed
ALLISON TRANSMISSION

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