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Service bulletin SB635007

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 id620801
Published by NHTSA2001-08-30
Manufacturer's numberSB635007
Manufacturer's date2001-07-27
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

SUBJECT REGARDING THE IMPROVED BLOW-MOLDED HVAC AIR DUCT SYSTEM DESIGNED TO IMPROVE AIR DISTRIBUTION TO THE SLEEPER AREA. *TT

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

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
MACK CH
MACK CX

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