Check and see if there is an ACC wire in the carside harness (the red wire on your new radio).
You may need to run you own, some models had the Metra harness 70-1858 and others had the Metra harness 70-2003.
The models that had the 70-2003 do not have that ACC wire, they turn on via a data wire, thats when you run your own ACC wire.
If you do have the 70-1858 (and the ACC wire), check fuses and make sure the radio is not bad.