dead battery with autopage 860LCD

I installed a Autopage 860LCD in my 2003 Trailblazer. This thing has been nothing but problems, Sometimes the door locks when I hit the lock button, sometimes it doesnt, Any idea what could be causing this? The unlock button works EVERY time. Also the problem im having is whenever I let the truck sit for 20-24 hours it drains the battery down to like 4volts. I know its the alarm module because I unplugged it and let it sit for 2 days with a fully charged battery, and it started fine. I did it with  different batteries, brand new optima red top, and then a brand new optima yellow top. I know the Alternator is fine, because it pushes 14 volts when im idling and driving, doesnt even dim with my system bumping. Do you think maybe there is something wrong with the alarm brain? Maybe a relay sticking or something? Any input on the above would be awesome. I am about to rip it out and toss it in the trash and get a astro 5204. Thanks guys once again!!

-Nick

well i have a 860 and all i can say is im happy

May i ask how you did your door looks????

also are you sure its programmed right,because you know that other CF key fab they give you

well it will only look my car,just haven't gotten around to fixing it

did yo go throw all the steps A,B,C,D etc

If all that checks out open up the brain and see if there is any burnt parts

Did you get this from ebay