Chevrolet Silverado 2001–2004 — technical service bulletin
Bulletin 030730057 · NHTSA communication 10005581 · issued Nov 1, 2003
Technical service bulletin
communication type
Power Train
component
2001–2004
model years
8
vehicle entries
Official summary
Transmission fluid leak from front of transmission - torque converter housing/pump area. 2500/3500 series models. *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.