Cadillac CTS 2003–2007 — technical service bulletin
Bulletin 3671 · NHTSA communication 10019195 · issued Feb 17, 2006
Technical service bulletin
communication type
Power Train
component
2003–2007
model years
15
vehicle entries
Official summary
Rear axle pinion seal may experience a fluid leak condition. *tt updated 04-26-07. *kb
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.