Locked my keys in my 2004 GMC envoy and the battery is dead.

Does it matter if the battery is dead, if your only key is locked inside the vehicle? If that is your one and only key, then call a lock out service like AAA, a tow company, or your local PD. They can get a lock out tool past the window to unlock vehicle. If you HAVE a spare and can't get in because of lack of power to the door locks, then you can try hooking jumper cables up to starter from underneath vehicle, put the red jumper on the big red cable to the starter, and the black jumper to any metallic part of the engine for ground. That will give you power to unlock doors with the fob. You might need to do this with the use of the lock out tool as well.

Broken lock on gmc 2006 envoy on the driver's side no key fob and it only has 1 key hole on the vehicle called PD but they said they won't come out because it's night time...out of options...