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Service bulletin TSB200040-022620

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 id10172458
Published by NHTSA2020-03-16
Manufacturer's numberTSB200040-022620
Manufacturer's date2020-02-26
NHTSA componentFUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS; EQUIPMENT ADAPTIVE/MOBILITY

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of a crank but not start or hard start condition. The liquid propane (LP) hoses carrying LP to and from the regulator can crack and deteriorate over time due to age and environmental stress. The cracked hoses pull in excess air, resulting in a lean fuel mixture.

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

Equipment and accessories, Fuel system, Fuel hoses and lines

Vehicles listed
CUMMINS CUMMINS

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