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Service bulletin 261101

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 id628045
Published by NHTSA2002-03-05
Manufacturer's number261101
Manufacturer's date2001-11-26
NHTSA componentVISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

CUSTOMERS WITH FULL-SIZE PICK-UPS AND FULL-SIZE UTILITIES FOR THE 1999 THROUGH 2002 MODEL YEAR MAY COMMENT ON A NOISE THAT SEEMS TO BE EMANATING FROM THE HVAC SYSTEM. *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
CHEVROLET CHEVROLET TRUCK
GMC GMC

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