Howdy Pam and welcome back. If you are willing to learn to find and solve the problems, then you can fix them yourself or hire someone to get their hands dirty. If so, you'll want to buy GMs MDI and GDS2 software and install on a laptop. Then you can see everything going on inside your truck's wiring and computers. Couple this with a subscription to AllDataDIY and you'll have all of the same information at your disposal like the dealerships do. Then you can set about solving each issue and making the truck enjoyable.