Well we got the trailer hitch installed through GMC aftermarket, however, i read that the transmission might need to be reprogrammed? We have the 4 cylinder and we did get a small boat that weighs 1000lbs so we should be fine. We got a hitch but the total length of the hitch is 9" long and only 3.5" of the hitch go into the receiver, does this seem right? i have attached a few pics below.


