Cadillac CTS 2003–2004 — technical service bulletin
Bulletin TB-050601-001B · NHTSA communication 10030121 · issued Apr 1, 2009
Technical service bulletin
communication type
Engine and Engine Cooling
component
2003–2004
model years
2
vehicle entries
Official summary
Cadillac: when operating in extremely cold weather conditions, some vehicles may leak engine oil from the cam/valve cover seals, especially from the left side just below the oil fill hole in the cam/valve cover. *pe
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.