Hello guys please forgive all the Newbe questions. I have searched a little bit but I am not able to find the info I need. I am about to purchase this suburban 2500, the thing is before I do I'd like to try and trouble shoot some issue's. It runs good has the 454 shifts good, motor and tranny seem sound. Now the issues when I was driving it I stopped at a stop sign engaged 4wd high it works but 4 high light flashes stopped engaged 4 low it worked light flashes then stays on. Abs light is also on, high beam light always engaged, turn signal switch is trashed figure it's the high beam issue. The truck isn't going to be a daily not scared of projects and it's going to be a weekend warrior for camping and family good times but I want it road worthy also. Any help would be much appreciated.