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Service bulletin C-1175

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 id10042968
Published by NHTSA2012-02-02
Manufacturer's numberC-1175
Manufacturer's date2011-11-22
NHTSA componentELECTRICAL SYSTEM:SOFTWARE

NHTSA's summary

CUMMINS: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. INFORMATION IS BEING PROVIDED REGARDING THE RELIABILITY IMPROVEMENTS AND PRODUCT PERFORMANCE OF ONE OR MORE EMISSIONS DEFECTS. ALSO AUTHORIZATION IS PROVIDED FOR RECALIBRATING THE ENGINE WITH IMPROVED SOFTWARE. *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, Software

Vehicles listed
CUMMINS ISX

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