leobowski

I just bought a 2014 GMC Sierra 1500, 2wd, Crew Cab, SLE, Standard Bed, last week. It has the 5.3L V8, 20" wheels with Goodyear Eagle LS-2's. When I found this truck at the dealership I took it for a test drive. The dealership had installed aftermarket 22' wheels on it. I didn't like the wheels, and when I was driving the truck I felt vibrations. Thinking that it was the performance tires causing that, I did not care for them. I asked for the original 20" wheels to be installed back on the truck and I bought it. I noticed the vibrations were still there. The very next day after buying the truck I took it to a local Discount Tire store to have the tires balanced, thinking the dealership probably didn't have it done. 1 tire, the driver front, was off ever so slightly and was balanced correctly. I'm still feeling the vibrations in the steering wheel at 35mph and 55mph. It's a constant vibration that drives me nuts! Driving through roads that have speed limits of either 35mph or 55mph really aggravate me. I spent about 4 hours reading posts on here last night and decided to add my 2 cents. I am gonna contact the dealership today and ask if they are aware of this issue and if there is a fix for it. I don't believe it's a tire issue as far as my truck is concerned. I have owned many Goodyear Eagle LS-2 tires on my 2009 GMC Sierra 1500 without there ever being an issue. It's something much more. I myself was even thinking that it could be the driveshaft, but after hours of reading posts here last night, I'm not really convinced it would be that either.