Hi FR friends. I need someone who knows Chevrolet Silverados. I have a 2010 1500 Crew Cab LTZ short box.5.7L v8 with a 3.42 rear axle ratio/ 6 spd. tranny. I was confused on towing weights (looking maybe to go to a slightly larger TT soon.) My window sticker says Z85 handling/trailering package; HD suspension etc.Will I had a shock when I called GM not once but twice. I do NOT have the Z85 suspension but the performance one Z60. I dropped off a copy of the sticker and the dealership said don't worry you can still tow. WTheck? I am bringing it in I want to be there to see the truck on the hoist. Do I truly have the extra cooler on it??? My tranny temps pulling 3300lb was running 210 degrees on a 50 degree day on the small hills near Rapid City SD. My hubby said I TOLD the salesmen a MUST have is the Z85 suspension. I do have the 6 speed transmission. How can a window sticker be wrong? My truck is less then 3years old and only 16,000 miles. Any ideas on what to do next?