WenmarOpen by Wenmar Pro

Service bulletin PI-31597

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 id10028165
Published by NHTSA2009-03-10
Manufacturer's numberPI-31597
Manufacturer's date2008-12-18
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CATERPILLAR SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. PRODUCT IMPROVEMENT PROGRAM FOR UPDATING SOFTWARE ON CERTAIN C13 ON HIGHWAY TRUCK ENGINES. THE SOFTWARE CAN CAUSE A BRIEF HESITATION IN ACCELERATION. CSC LETTER WAS RECEIVED. *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

Engine

Vehicles listed
CATERPILLAR C13

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