bouncing/vibration in drivers side front

[cmaxell]

I have a 2002 gmc 2500hd that feels like it is bouncing or shaking back and forth in the drivers side front.I thought it was maybe the tires so i put new tires on it.still does it.so i took it back to have them check the balance of the tire,still does it.It does'nt start doing it until i reach about 45mph then kind of plains out at about 60mph.A friend of mine has an 03 2500hd duramax diesel and it does the same thing.Any help!!!!!!!!!

[Regalwhiskey]

Seat vibration and bouncing is usually a problem in the rear.Since its a 2500 It's probably equiped with 10 ply rated tires. I would lower the air pressure when empty to about 45PSI or the minimum amout on the sidewall of the tire. This will give you a softer ride. Check for an out of round tire, and you can also put a jack under the differential and spin the rear tires checking for the vibrations. At about 90K miles you might consider shocks too if you've logged any heavy towing miles.

[cmaxell]

Actually u can feel it in the steering wheel and on your feet.It actually feels like the wheel might fall off.It`s like the wheel is wobbling back and forth.any more info would be great.Thanks ahead of time.

[Regalwhiskey]

Originally Posted by cmaxell

Actually u can feel it in the steering wheel and on your feet.It actually feels like the wheel might fall off.It`s like the wheel is wobbling back and forth.any more info would be great.Thanks ahead of time.

Looks like it might be a bent wheel to me. If its that bad,the tire shop should be able to find the problem.