Chevrolet Avalanche 2002 — technical service bulletin
Bulletin 010101 · NHTSA communication 623505 · issued Jan 1, 2001
Technical service bulletin
communication type
Equipment
component
2002
model years
1
vehicle entries
Official summary
Some vehicles equipped with a sunroof and the option accessory roof rack can generate windnoise when the sunroof is open depending on the positioning of the front roof rack cross bow. *slc
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.