I started having this problem a couple weeks ago and can not figure it out. When I leave for work after the truck has sat all day and get on the highway, I have a very noticable front end vibration. I have had the wheel balance checked and its fine. Funny thing is, after about 10 to 15 miles of driving it goes away. Then when I head home from work, same thing, vibration for the first 10 to 15 miles and then nothing. Anyone else run into this??

 

Check the hub bearings. They usually go out after 80-100k miles. Do you hear a low hum?

 

flat spots on the tires?

 

If not already done.... check inflation, may have one or both low pressure. after 10-15 miles heat will increase and vibration will decrease

 

I noticed the tires on my wife's Yukon (Firestone Destination LE) are rough riding for a short while like you are describing. It's feels like once they warm up they get softer and ride better. It is worse when it is cold out.

 

Truck has 62000 on it. No hum. Tires have 7000 on them. Got them put on in January. Just started a couple weeks ago. Tires all have 35 psi in them. Gonna have the tires checked to see if they might be aout of round or something.