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Service bulletin DD-14-TS-2

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 id10055068
Published by NHTSA2014-04-05
Manufacturer's numberDD-14-TS-2
Manufacturer's date2014-01-24
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE)

NHTSA's summary

DETROIT: THERE IS POOR THROTTLE AND ACCELERATION RESPONSE, ON SOME ENGINES, DUE TO PLUGGED PORTS IN EGR VENTURI PIPE THAT SLOWS RESPONSE DOWN, OF SENSOR, AND MIGHT PRODUCE NO CODES BECAUSE UNIT IS IN SMOKE CONTROL. NO MODEL OR YEARS LISTED. *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, Exhaust and emissions, EGR valve

Vehicles listed
DETROIT DIESEL DETROIT

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