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Service bulletin TSB110181-042215

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 id10087701
Published by NHTSA2017-01-04
Manufacturer's numberTSB110181-042215
Manufacturer's date2015-04-23
NHTSA componentENGINE

NHTSA's summary

THIS TECHNICAL SERVICE BULLETIN DESCRIBES THE VERIFICATION AND RESOLUTION OF ENGINE SPEED INSTABILITY RELATED TO TRUCK VACUUM BLOWER OR PUMP ENGAGEMENT. SOME UNITS WITH TRANSFER CASES HAVE EXHIBITED ENGINE SPEED INSTABILITY WHEN THE VACUUM BLOWER OR PUMP IS ENGAGED. NEW ENGINE CONTROL MODULE SOFTWARE CAN ADDRESS MOST OF THESE ISSUES.

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 ISL9
CUMMINS ISX11.9
CUMMINS ISX12
CUMMINS ISX15

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