Well, I bought my brand new 2011 Silverado 4x4 "all star" package, crewcab a couple months ago. When I went to pick up the truck, the interior was dirty, and there was the shipping glue all over the interior. There was also a snag in the passenger side seat. I pointed all of this out before leaving the lot. Also, the fan in the ceiling right above the drivers head, was making a loud clicking noise... They said they would get it all fixed.. Took it in, they detailed the truck, changed out the fan, and put a new seat cover on the seat. A little later, I called my salesman (a friend of mine) and told him that the RightRear door speaker rattled badly at low volumes. He said he would get me a service appt. set up. I took it in, and they said the door panel on that door was warped, and that was causing the rattle. They ordered me a new panel, and that door is fixed. Now depending on the temperature outside, the other 3 doors also rattle at low volumes on the stereo. They seem to rattle much worse on very hot days. I have also been having problems with the transmission. As I slow down coming to a stop, occassionally instead of downshifting, the transmission seems to upshift, and it pushes the truck forward, as if I gave it more throttle. After a highway trip, I pulled into my driveway, and the rear tires actually made a "Chirp" as the transmission very poorly downshifted... In the last few days, the truck has started this shudder. At very slow speeds, the truck shakes, like the engine is misfiring. It happens when you let off the brake and under light throttle, or when your slowing down, it will shake as it comes to a stop. I mentioned these issues to my salesman, and his response was "Some people are more picky than others" - I took that as, I am being overly critical of the truck. I spent $36k on this truck. I think I have every right to have high expectations on a BRAND NEW TRUCK. Im really regretting buying this thing. I went with a chevy because i have owned over 10 chevy trucks. This is the first one that I regret buying. I have had chevy trucks with a th350, th400, 700r4, 4l60e, and an express van with a 4l80e transmission and NONE of them shifted as poorly as this truck. Anyone want to buy a junk brand new truck? Only has 1500 miles!! If any GM rep is here, I would like to be in contact with you directly. I am 100% NOT pleased with this truck.