WenmarOpen by Wenmar Pro

Service bulletin TT-7484-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 id10058996
Published by NHTSA2016-01-09
Manufacturer's numberTT-7484-EN
Manufacturer's date2015-02-01
ReplacesTT-7484 EN-REV-A
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

ALLISON TRANSMISSION: ON SOME TRUCKS, THE PUSH BUTTON SHIFT SELECTOR (PBSS) SKIPS OIL LEVEL READING AND GOES DIRECTLY TO PROGNOSTICS AND COULD BE MISSING WIRE 116 ON BULKHEAD OTHER SIDE. MODELS T680, T880, 579, 567. *PE UPDATED 2/1/16. *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

Vehicles listed
ALLISON TRANSMISSION
KENWORTH T6802016
KENWORTH T8802016
PETERBILT 5672016
PETERBILT 5792016

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