I bought a 2007 Tahoe at the beginning of last year and shortly after we noticed the sensor for the rear defroster fell off on the passenger side, we took it into Randy Wise on Clio Rd. in Flint Michigan on 3 separate occasions and they have failed to fix it as of yet, we've have been told twice that it may just be a "bad kit from GM", well it seems that we've gotten the worst three batches that GM makes, when I called today after waiting again for the truck to be fixed and the defroster wire falling off before I even made it home, I will be calling the dealership I originally bought the vehicle from, Hank Graff in Davison Michigan, I am hoping that a different dealership will do the trick, also we had a battery charging light go off this morning and I was told that there was some corrosion from salt and they cleaned it off, I have had this vehicle in twice in the month of December due to my battery going dead for no reason finally the second time they replaced the battery, they said the first time they tested it and it didn't show anything wrong with the battery, I would have thought the charging system would have been checked the other 2 times I was there considering I was told the first time that the battery may have gone dead because it wasn't being charged enough due to the fact that I don't travel enough on a daily/weekly basis, unfortunately my "short" trips take a tank and a half a week, I'm not sure if I will ever take any vehicle to this place again because the hassle I've gone through are quit enough to last me a life time, please respond with your response to this problem