WenmarOpen by Wenmar Pro

Service bulletin T1651

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 id10086643
Published by NHTSA2016-12-20
Manufacturer's numberT1651
Manufacturer's date2015-06-12
NHTSA componentENGINE

NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE IS BEING ISSUED TO RECALIBRATE THE ENGINE CONTROL MODULE (ECM) OF CERTAIN ISX15 CM2350 ENGINES. IT PROVIDES AUTHORIZATION FOR CERTIFIED REPAIR LOCATIONS TO RECALIBRATE THE ECM ANYTIME THE UNIT IS IN FOR MAINTENANCE OR REPAIRS, WITH CERTAIN RESTRICTIONS ON REIMBURSEMENT. THIS IS A REVISION TO A PREVIOUSLY SUBMITTED COMMUNICATION.

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

Engine

Vehicles listed
CUMMINS ISX15

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