trailer brake question

[seattle gmc]

Dose my 07 silverado classic have any kind of integrated trialer brake?? Or do i need to go out and buy a brake controler. I saw some on etrailer.com that seemed straight forward to instal, but before i drop some coin i just need to make sure that i need a brake controler or not. I hooked up a multi meter to the the trailer brake pin on the 7 pin conector but didn't get any volts when i had my wife push on the brake. I was wondering if any of these trucks came with an integrated trailer brake or not.

My vintage tailer has a new axle with electric brakes that i would like to take advantage of. Its almost time to go camping and i want to have everything sorted out before we hit the road for the first time.

Every thred needs some pics, so here are some of the trailer that we will be camping in soon.