1. Open the trunk.
2. Locate the four bolts that hold the bumper in place. There are two bolts on each side of the bumper.
3. Remove the bolts.
4. Gently pull the bumper away from the car. Be careful not to damage the paint or any of the other components of the car.
5. Once the bumper is removed, you can access the parts behind it.
Here are some additional tips for removing the rear bumper of a 2007 Cadillac CTS:
* Make sure that you have all of the tools that you need before you start.
* Be patient and take your time. Removing the bumper can be a difficult task, but it is important to do it carefully to avoid damage.
* If you are not comfortable with this task, you can always take your car to a mechanic to have the bumper removed.
