Chevrolet Avalanche 1999–2002 — technical service bulletin
Bulletin 010139007 · NHTSA communication 628856 · issued Jan 1, 2002
Technical service bulletin
communication type
Visibility
component
1999–2002
model years
9
vehicle entries
Official summary
A condition may exist where the customer cannot control the hvac system modes and / or the temperature. *tt
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.