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Service bulletin SIL 4-EP-15 Rev

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 id10118818
Published by NHTSA2017-10-15
Manufacturer's numberSIL 4-EP-15 Rev
Manufacturer's date2017-09-28
NHTSA componentELECTRICAL SYSTEM; POWER TRAIN

NHTSA's summary

Announces the availability of the passive discharge resistor as a service part. The communications also contains instructions for replacing the passive discharge resistor assembly inside the dual power inverter module 2 (DPIM2).

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

Electrical system, Transmission and driveline

Vehicles listed
ALLISON H 40 EP TRANSMISSION
ALLISON H 50 EP TRANSMISSION

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