Chevrolet Avalanche 2004–2005 — technical service bulletin
Bulletin 3260 · NHTSA communication 10017145 · issued Oct 26, 2005
Technical service bulletin
communication type
Power Train
component
2004–2005
model years
14
vehicle entries
Official summary
4l80e/4l85e harsh shift or slip no tcc apply. *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.