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Service bulletin T2513

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 id10224318
Published by NHTSA2022-10-17
Manufacturer's numberT2513
Manufacturer's date2022-09-22
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION; POWER TRAIN

NHTSA's summary

This Temporary Repair Practice is being issued to address failures related to fault codes 1139, 1141, 1142, 1143, 1144, 1145, 3748, 3749, 4713, and/or 3151 on certain ISB6.7 Hybrid Bus engines with Allison Transmission Systems only. This TRP authorizes certified repair locations to repair failures due to the listed fault codes where troubleshooting lead to a confirmed failure of the components related to the listed fault codes.

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, Automatic transmission

Vehicles listed
ALLISON DIV ALLISON DIV

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