i bought this truck one year ago and since then i really had no problems at all till this winter, i started to get a shake in the truck when it went to auto 4x4 and direct 4x4 and as the traction control stopped working , and now this week it started to rain from my dome light ,top left side corner of the windshield and water running down the trim on the left side, as i am still waiting to get it into the shop i am thinking that this water is coming from the antenna on the roof. now after i get this all fix it still will be a pig on gas LOL....got to have my chev.