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Service bulletin IK1300055

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 id10131120
Published by NHTSA2018-04-02
Manufacturer's numberIK1300055
Manufacturer's date2014-04-29
NHTSA componentPOWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

Transmission Upshifting too Fast; Only with Allison Gen 4 LCT (1000 and 2000 series) Transmission

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, Manual transmission

Vehicles listed
IC BUS BE2007 to 2009
IC BUS BE2011 to 2016
IC BUS BESB2010
IC BUS CASB2013 to 2015
IC BUS CE2007 to 2012
IC BUS CESB2016
INTERNATIONAL DURASTAR2007 to 2016
INTERNATIONAL WORKSTAR2007 to 2013
INTERNATIONAL WORKSTAR2014, 2015
INTERNATIONAL WORKSTAR2016

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

Other bulletins for the same vehicles and component
IK13000382018-04-02. Service bulletin. Transmission Control Module Relocation; only with Allison WT Gen 3 Transmission
IK13000292018-04-02. Service bulletin. Roll Pins Backing Out of Bell Crank; Only with manual transmission
IK13000182018-04-02. Service bulletin. Transmission Jumping Out of Gear; manual transmission only
MIN-151072015-09-21. Service bulletin. TRANSMISSIONS CONTROLLER FOR SPEED; FEATURE CODE AND APPLICATION CODE THAT IDENTIFIES TORQUE CONTROL SHIFTING *CN