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Service bulletin 08-TL-14

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 id10027164
Published by NHTSA2009-01-10
Manufacturer's number08-TL-14
Manufacturer's date2008-08-08
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

DETROIT DIESEL: AMBIENT AIR TEMPERATURE SENSOR FOR EPA07 ENGINES (KIT P/N: 23538495). THE AAT SENSOR PROVIDES OUTSIDE TEMPERATURE DATA FOR THE "IDLE SHUTDOWN TIME" AND "OPTIMIZED IDLE" FEATURES, ALLOWING THESE FEATURES TO BE OVERRIDDEN UNDER EXTREMELY HOT OR COLD CONDITIONS. *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
DETROIT DIESEL OPTIMIZED IDLE

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