Cadillac CTS 2003–2004 — technical service bulletin
Bulletin 040605002 · NHTSA communication 10008674 · issued Mar 1, 2004
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
2
vehicle entries
Official summary
Rattle/buzz type noise from under engine compartment during acceleration / deceleration. *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.