I have an 05 TrailBlazer that has a stuck lock. This is on the hatch and has happened before in the extreme cold (which is current conditions as well). It is stuck in the locked position and will not latch to close. Any pointers? It corrected itself prior with warmer temps (I beleive that was the reason), but I tried to warm with a hair dryer last night for some time and it never worked?! Any assistance would be much appreciated!