I have a 2007 Silverado 1500 extended cab. I don't know if I have an LS or LT. Or neither. All it says on the rear fender is "4 x 4". I know it's a 1500 with a small V8. I can't find the window sticker. The dealer wrote "K Pickup" on the sales order but that's all. So I always have trouble ordering / buying accessories / parts. For example, I had fender flares installed when I bought it new in '07 and now broke one and can't figure out how to order a new set because places like JC Whitney asks for the body style. (I've heard they changed body styles mid-year in 2007.) And I can't even get windshield wipers to fit because catalogs keep asking if its' an LS, LT, or whatever. I looked a Advanced Auto web site and can't figure out which wipers to buy. None of the wipers that Wal-Mart carries fit. I've tried their Bosch and Rainx 22 inch and the connectors don't fit. How can I figure out what it is? Would I be able to find any info on the Internet with the VIN?