It could be a couple things. First, there is a park lock solenoid which prevents the shifter from being moved from park unless your foot is on the brake. So, check to see if the brake lights are coming on. If they are not, chances are either there is a bad fuse or the brake light switch is bad. If they are coming on lets test the shift lock solenoid for power.
Here is a guide and the location of the solenoid:
Check out the diagrams (below).
Let us know what happens and please upload pictures or videos of the problem.
Images (Click to enlarge)
Sunday, July 12th, 2015 AT 8:09 PM