Chevrolet Avalanche 2004 — technical service bulletin
Bulletin 1146 · NHTSA communication 10006442 · issued Mar 12, 2004
Technical service bulletin
communication type
Unknown OR Other
component
2004
model years
7
vehicle entries
Official summary
Stop delivery order on certain vehicles with 4l80e or 4l8e automatic transmission. This also includes 2004 gmc, chevrolet w-medium duty and isuzu w series. *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.