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Service bulletin 24111

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 id11012840
Published by NHTSA2025-01-14
Manufacturer's number24111
Manufacturer's date2024-12-09
Campaign id or software version24111
NHTSA componentENGINE

NHTSA's summary

REASON FOR REVISION: Added section and parts for heat exchangers with shutoff valve (feature 48PPP). Added image showing correct installation of parts for the overall cabin heater system. Revised steps and images throughout the document for consistency and clarity. DEFECT DESCRIPTION: Certain IC BusĀ® Electric CE Series buses may have incorrect coolant hose routing for the cabin heat which may cause coolant to leak from the cabin heat surge tank overflow hose.

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

Engine

Vehicles listed
IC BUS EVSB2024

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