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Service bulletin SB-391

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 id10051779
Published by NHTSA2013-04-11
Manufacturer's numberSB-391
Manufacturer's date2012-11-13
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

MCI: ALLISON TRANSMISSION, THE MANUFACTURER OF DUAL POWER INVERTER MODULE 2 (DPIM2) IS REPLACING ALL OF THE TRANSMISSIONS ON D MODEL COACHES. MODEL D SERIES. NO MODEL YEARS LISTED. *PE

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

Transmission and driveline, Automatic transmission, Manual transmission

Vehicles listed
MCI D SERIES
MCI D SERIES1998

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