My Georgetown XL has the Back-up camera screen as a part of the entertainment head unit as it is in most of the XL units.
For me, the screen was useless when changing lanes, because it was so far down on the console which made it hard to see.
To solve the problem I added a screen to bring the camera view up higher on the dash and make it easier for the driver (Me) to see.
I found the monitor on Amazon for what I felt was a VERY reasonable price.
Amazon.com : 7" TFT LCD Color 2 Video Input Car RearView Headrest Monitor DVD VCR Monitor With Remote and Stand & Support Rotating The Screen : Vehicle Overhead Video : Car Electronics
Installation was straight forward and I simply disconnected the camera feed from the head unit and connected it to one of the two inputs on the monitor. I also wired the monitor to the power supply for the head unit.
Since I hate to put holes in the dash, I slid the base of the monitor between the center console and the dash which created a snug fit.
After a 2000 mile trip over the Thanksgiving Holiday week, I am pleased with the results.
One last point, I like to be able to see out the rearview camera while driving, and especially when towing. With the factory setup, if trying to view the review camera while utilizing the GPS the camera would turn off, and I would have to reselect the camera every time the GPS would give new instructions. This setup eliminates that quirk.