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Service bulletin TT-7400-EN

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 id10055683
Published by NHTSA2014-07-03
Manufacturer's numberTT-7400-EN
Manufacturer's date2014-03-18
NHTSA componentELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:MANUAL TRANSMISSION

NHTSA's summary

DAIMLER TRUCKS: ON BEHALF OF WESTERN STAR AND FREIGHTLINER TRUCKS, A REPROGRAMMING WILL BE PERFORMED FOR ACCELERATION CONTROL (VAC), ON SOME TRUCKS, BY ALLISON TRANSMISSION DISTRIBUTORS. *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

Electrical system, Transmission and driveline, Manual transmission, Software

Vehicles listed
FREIGHTLINER 108SD2013
FREIGHTLINER 114SD2013
FREIGHTLINER BUSINESS CLASS M22013
FREIGHTLINER CASCADIA2013
WESTERN STAR 47002013
WESTERN STAR 49002013

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

Recalls for the same vehicles and component
13V1270002013-04-09. ELECTRICAL SYSTEM:SOFTWARE
13V0990002013-03-18. ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING

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
D20M12020-04-24. Service bulletin. Updated DDC Field Service Campaign for GHG14 DETROIT DD13 with Two-Box Aftertreatment Software Reprogramming. Certain Detroit Model Year 2013 to 2015 GHG14 DD13 engines that are registered in California will require reprogramming to a minimum of the MCM software version and fuel map version listed below: MCM Software Version 4.7.0.0 ZGS 005. Certain sections have been updated for clarity.
SB54-2392019-11-20. Service bulletin. Service Bulletin for Cascadia Cabin CAN ECU Compatibility. Compatible software levels are required for the proper operation of the vehicle.
ICI19-016 SF5602019-06-10. Service bulletin. Revised Bulletin
sb543082019-06-03. Service bulletin. sb54308 Chassis ECU Programming
Detroit DT122019-03-11. Service bulletin. Detroit DT12 Split Rod Bushing Repair letter to customer
D18M1 GHG14 Heav2018-12-10. Service bulletin. Field Service Campaign: GHG14 Heavy Duty Engine Platform Vocational Application Programming
0405-182018-10-01. Service bulletin. 0405-18 Symptom Diagnostics - Range Up or Down Shift Issue
ICI13-0072018-06-25. Service bulletin. ICI13-007-DLR FL641 ? Interim Recall Notice
54-2772018-06-25. Service bulletin. 54-277 - Resetting Erroneous Learned Roll Call ECUs on Vehicles with ICU4M
sb26522018-06-18. Service bulletin. DT12 PTO Upfit