If your unit has a screen chances are there is an RCA jack or a wire on the harness labeled for a back up cameras. These units are easy to pull out and check the back of.
1. Remove heater/ac control knobs. Be careful to not loose those little flat springs in the nobs. Remove the three phillips screws.
2. There are two phillips screws at the top of the center air vents. Point the vents up, they are at the top.
3.The face plate complete with heater control can now be pulled out. Just let it hang by the wires.
4. Remove the four small bolts holding the unit and slide it out..
You can find this process on You Tube if all I did was confuse you... Enjoy the adventure... Chap