My dad surprised me for Christmas by installing a new head unit into my truck. Problem is that my alarm now beeps 3 times every few minutes while I am driving and the door sensors no longer work. My truck has a sticker on the door windows that says "GM Goodwrench Security System" on it. The inginition alarm and kill switch still work, but driving and sounding like the cops every few minutes is very irritating. Do you guys have any experience with this? My truck is a 4.3L extended cab 96 S-10 4x2. Please help.