2006 silverado-225000 miles shakes

My truck has a shake in the seat while driving at or around 60 to 70 anything under or over it seems to subside.and its not constant it comes then goes comes then goes.and ive balanced the tires and had it looked at and ive done all i can to find the problem.it has done it since i bought the truck. new tires seem to help but as they start to ware it starts again.:banghead::banghead::banghead:

My truck has a shake in the seat while driving at or around 60 to 70 anything under or over it seems to subside.and its not constant it comes then goes comes then goes.and ive balanced the tires and had it looked at and ive done all i can to find the problem.it has done it since i bought the truck. new tires seem to help but as they start to ware it starts again.:banghead::banghead::banghead:


if this is a OEM stock height vehicle , I would say you must have a complete front end inspection for worn componets..then when all have been replaced you need a front end alignment ...then rotate all tires every 15,ooomi ....with balancing of the tires AFTER the algnment ....

if your vehicle has a correct alignment and with tire rotation all tires should have even tire wear across the tread face....

with this being done you will get the maximum service life of the tires....my oem tires I got 93,ooomi....65% worn I then replaced ...

also do not use side weghts on the rims ,,,use the stick on weights mounted on the inner rim surface , not on the outer edges....these balancing weights on the rim outer edges fall off...

with proper cleaning of the rim surface these stick on weights work great ...wheel surface does not get damaged........

but its in the seat not the steering wheel. and i have replaced tie rods up front and both wheel hubs.:banghead::runaround:

but its in the seat not the steering wheel. and i have replaced tie rods up front and both wheel hubs.:banghead::runaround:

if the vehicle has an intermittent vibration that would be a tough one..

if you always have a vibration at speed X this can be tires , bearings, front end componets, drive shafts, worn differential componets , U joints..

has this vehicle been checked for the frame being out of square,,,tracking sideways ?

check that the motor//tranny mounts are still good...

I had a very similar problem on an older chevy. I went thru everything. Turned out being the steering stabilizer shock. It only happened at a certain speed. Like you said any faster or any slower and no problems. You would feel it in the vehicle but not really in the steering wheel.

An out-of balance driveshaft or worn out carrier bearing (for the two-piece versions) can be felt through the seat. Hope this helps!