trailer brake control

[AL-T]

hi just got a 2011 gmc 1500 with trailer package need to set brake
trailer control were do i hook up my trailer control my ford came
with a pig tail my new gmc had none thanks

 

[happy 2011]

i THINK there under the master cylinder tape to the harnest.

 

[PGDriver]

This is what you want, 2011 is the same.
http://www.youtube.com/watch?v=qsBJySTam9M&feature=player_embedded