Cadillac CTS 2003–2004 — technical service bulletin
Bulletin 020730012B · NHTSA communication 10000928 · issued Apr 1, 2004
Technical service bulletin
communication type
Power Train
component
2003–2004
model years
4
vehicle entries
Official summary
Hydra-matic 5l40-e serviceable components and labor operations. Original not yet received. *tt bulletin 02-07-30-012b not yet received. *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.