I have a 94 chevy Burban, 1500, 350,000 miles. When I speed up to 45 or so and again round 53-55 I get this shake. It's feels like it's up front. I'm wondering if anybody knows about this. Could I just need a rotate and balance, is it a u joint, do I need my driveshaft balanced or is this something more sinister(expensive). Any help from y'all chevy guys and gals would be greatly appreciated.
Btw I'm getting rotate and balance in about a week just because I know it needs one.
And another thing I thought of. Could the tire size be part of the problem. It has tires that are not normal truck size tires,

 

Welcome to the forum...
It could be those items you listed as well as the wheel bearings....
I'd start with getting the front end off the ground and checking for any play in the wheel bearings, if none found then go for the tire balance AND rotation, then an alignment....

 

How do I check wheel bearings. I am more computer inclined than mechanically inclined.

 

I'm willing to bet it is a tire problem. Let us know what the balance job does and we can go from there.

 

Jack up the each front wheel and see if the wheel rocks back and forth.

about 1 and 7 o'clock.

9 and 3 o'clock would be more for other front end components.

 

The shake isnt as bad but its still noticeable

 

Did they check for a bent wheel? How old are the tires? Many times a bad tire will not balance out and cause a vibration.

 

Yes they did check for bent wheel. Tires not that old good shape. I'm gonna get the front off the ground weds or Thursday when I don't have to work. Besides play in the wheels is there anything else I should look for?