Please forgive me if this post gets a little to long. Gonna try & give some key info to try & get some help. Long story short...I was on vacation in another state, and had a no-start issue. Was able to get a jump start from a friend. Went to the local Autozone & had them check the batteries. They determined that (1) battery was bad. Well, thinking the other was soon to follow, I replaced both. Then the new problems start. Got back to my original destination, and upon shutting off the truck and opening the door, the radio continued to stay on. Investigated a bit further, and most of my steering wheel controls are jumbled. Also noticed I lost my door chimes, and can hear engine idle through the speakers. I know the radio stays on for a handful of minutes after you turn off the vehicle, but with the key off & doors open? I can turn on/off the radio without a key in the ignition. Wasn't like this before. Now for some vehicle info:
'06 Chevy Silverado LBZ DMAX
Aftermarket Alpine stereo
GM Onstar GMOS module
PAC SWI-Jack
I've narrowed it down to the problem possibly being the GMOS module, and I say that because the problems all involve the stereo. I'm hoping someone may have had a similar problem, and can offer some help, thanks!