Just for documentation: I successfully replaced the stock 2013 radio with an aftermarket Pioneer double DIN. I also installed a rear view camera and a mic for a Bluetooth connected phone. There were a few glitches, but it is up and running perfectly now.
Crutchfield tech support was fabulous. I am pretty good with electronics, but there were a few surprises and they patiently walked me through them. Their prices are great when one takes into account the discounted harness plus the free dashboard and antenna adapter.
With the rear camera, I can now see the hitch when backing up to connect to my travel trailer. The camera is much clearer than those displayed in a mirror.
This Pioneer (it is the 3500 model) plays DVDs, so I can burn 4GB of MP3s on a disk and run random play. This unit has rear USB and audio plugs. I ran the included USB connector into the center consol, along with an audio mini plug connector. I can control a iPod or iPad on the radio via the USB while it is being charged. Bluetooth allows me to connect my phone for hands free operation or play music. The radio has HD.
The wiring harness adapter allows me to retain radio steering wheel controls. It also notifies the radio when reverse is engaged, automatically turning on the rear view camera.