Chevrolet Avalanche 2004–2005 — technical service bulletin
Bulletin 3352 · NHTSA communication 10014857 · issued May 11, 2005
Technical service bulletin
communication type
Power Train
component
2004–2005
model years
12
vehicle entries
Official summary
Service 4wd light on with either a variety of diagnostic trouble codes or no communication with the transfer case control module. *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.