Saturday, August 8, 2026
RecallGazette

Vehicle problems, recalls & safety intelligence

Chevrolet Avalanche 1999–2006technical service bulletin

Bulletin 3259C · NHTSA communication 10005514 · issued Mar 2, 2004

Technical service bulletin
communication type
Power Train
component
1999–2006
model years
54
vehicle entries

Official summary

4l80e, 4l85e whine noise in first and second gear. *tt

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.