Hi hlevy912,Welcome to 2carpros
You will need to jack the car up
and disconnect the battery, here is a general guide that will show you how along with the manual diagrams (below).
2004 Cadillac CTS V6-3.6L VIN 7
STARTER MOTOR REPLACEMENT
1.Turn the ignition OFF.
2.Disconnect the battery negative cable.
3.Remove the starter solenoid electrical connector from the starter.
4.Remove the starter terminal nut (1) and the battery positive cable (2) from the starter.
5.Remove the starter motor bolts.
6.Remove the starter motor.
Please let us know if you need anything else to get the problem fixed.
Saturday, August 7th, 2010 AT 11:30 PM