On the verge of trading this one in - HELP

[sabooska]

I'm from the mid missouri area, i was raised mostly on chevys but i have a love for all things truck, unfortunately i'm having some huge issues now that i'm back in a GM after being with dodge for a few years lol

 

If i'm in the wrong area posting i'm sorry, please direct me to the correct place. I have a 2012 gmc sierra, i've had it little less than a year. When i bought this truck the previous owner had an "autopage alarm system" installed. not a big fan but thought "if it isnt broke dont fix it". Let's just jump ahead to the problem. periodically when i try to start the truck NOTHING happens for the most part. doesn't try to crank, sometimes the gauges flicker on and off, most of the time it starts throwing warning alarms for needing service on the 4x4, the traction control, a several other things. if you fight with it long enough it will start but once it starts that first time after the issue, my actual gauges don't work at all but if you shut it back off and start it again she will run fine for another few days maybe even a week or so. Now i messed around with a few things myself and just for a lack of time i dropped it off a chevy dealer. they tell me the autopage alarm is the problem, have it put in valet mode and they say that it should be 100% fine for the time being to run that way and thats all thats wrong i need it removed. of course it's not, so i have them remove it entirely. they say drive it for a week and let's see. of course problem still exists. so they say the autopage alarm has fried and taken some innocent bystanders with it. Replaced the BCM, Ignition, a couple relays (don't remember which ones specifically at this moment) re programmed the truck and the full removal of the Autopage alarm included pulling out the splices re soldering the wires and shrink tubing the wires. ( I checked to make sure of that last part) so it runs great for a week then of course i have it fully loaded down and it doesn't start this weekend. read on another forum how the starter getting moisture in it this and that will cause it to not try to start. replaced the starter. Runs great for saturday and sunday. monday morning nothing again. i have combed every wire i can get to cannot find loose wires or bad connections or even dirty connections anywhere. I am at my wits end with this truck. I hate to see it go but i cannot just keep throwing money at it until something works if it ever does. Surely someone has heard of this problem and been down this road to tell me where to look.