I have a 2004 envoy xuv and today started having trouble with the tailgate. The tailgate comes open 2 ways out like a station wagon or down like a truck. there are two diffrent buttons on the gate one for down and one for out. Both buttons are opening the gate out and the gate wont always shut. When you open the gate you can here what sounds like a beep coming from the latch. Is this a beep telling me something is wrong or is it a squeal from the latch do to it going bad? Why are both buttons opening the gate out instead of down? Any help is appreciated.