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Service bulletin SB-20-66

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 id10036586
Published by NHTSA2011-04-04
Manufacturer's numberSB-20-66
Manufacturer's date2010-12-01
NHTSA componentUNKNOWN OR OTHER

NHTSA's summary

FREIGHTLINER: GENTECH LOW COOLANT LEVEL SENSOR (PART NO. 06-62384-002) IS ASSEMBLED WITH A TWO PIECE HOUSING HELD TOGETHER WITH TWO LOCKING TABS, ONE ON THE TOP AND THE OTHER ON THE BOTTOM. MODELS CASCADIA, CORONADO, BUSINESS CLASS M2. *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.

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22011
FREIGHTLINER CASCADIA2010
FREIGHTLINER CORONADO2010

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