Cadillac CTS 2003 — technical service bulletin
Bulletin 020730033 · NHTSA communication 10000070 · issued Sep 1, 2002
Technical service bulletin
communication type
Power Train
component
2003
model years
1
vehicle entries
Official summary
Transmission control module (tcm) will not communicate with non-tech 2 service or test equipment. *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.