Passenger seat shaking

My passenger seat likes to shake like no other. It's beyond annoying. Higher the speed the more it likes to shake. Is something loose?

 

Fairly normal, but I usually get them to shake less after a tire rebalance.

if it’s a long drive and annoying try to buckle the seat belt on it and put the shoulder strap behind the seat back.

 

Could be out of balance wheels.
One on of my previous vehicles had horrible seat shake at freeway speeds and it turned out one of my rear tires was out of balance.

 

There are bolts that hold the front passenger seat. Give them a uggaduga.

 

It's slop in the rails that the seat rides on. You could try sliding the seat forward or back to see if it gets better.

Unfortunately it's normal for these seats... Whatever you do don't have the dealer try to fix it... I made that mistake and very much regret it.

 

If the seat shakes, it's in the rear tires.
If the steering wheel shakes, it's in the front tires.

 

Yes try moving the seat yourself. As other said, check bolts then the rails. You should be able to figure this out without ever leaving the driveway.

 

I keep a rag shoved between the console and the seat to stop the shake. It falls out if some runs the seat forward and back a few times, but I just shove it back in.

 

Can you move seat back some or move whole seat forwad or back and make sure its locked good?