So we knew something was wrong with our 2005 Suburban, something electrical. We took it to a parts shop and asked them to do a test on the alternator and they come back with a bad test. They offer to sell us another one and recommended that we go to this Goodyear shop across the street to have it installed.
So we head over there and ask them to quote us and take our truck in. Decent estimate, so we left it there. About 1/2hr later the guys from Goodyear call us back and they tell us that the cables to the battery were kind of loose and that it didn't need a new alternator. Told us they would only charge a minimal shop fee for looking at it, and told us to return the alternator. Saved us a couple hundred bucks, because they were honest. That is an extremely hard trait to find in a Mechanic shop. Needless to say they have all my business from now on for all of my vehicles.