I'm not sure where to post this question, so I hope its OK to add it to this thread.
My 2006 Nissan Frontier Nismo Crewcab vibrates from 20mph and up. The truck does NOT shimmy. The whole truck vibrates. I feel it in the steering wheel and in the gas pedal as well as hear things vibrate in the cab. The truck tracks correctly and does not pull to one side or the other when braking.
The vibration starts at 20 mph and continues to highway speeds, vibrating with higher frequencies as the speed increases. At 30 mph, putting it into 4 wheel drive stops the vibration as long as the accelerator is depressed (eg going up a hill). Going down hill at 30 mph in 4 wheel drive, the vibration returns. The vibration is present all the time in 2 wheel drive. This makes me suspect something in the front wheel/axel assembly is causing the problem since applying torque at moderate speeds to the front wheel drive causes the vibration to stop.
I just had new Yokahama Geolander tires put on by TownFair, balanced and alligned. The vibration seems worse that it was with the old tires. The vibration problem began with the old tires, perhaps 10K miles ago, and I assumed that they were cupped and this was causing the problem. This apparently is not the correct, but the irregularity of the old tires might have masked the problem to some extent.
Can anyone help me with this proble? The truck is under premium extended warrantee, but I am worried that the dealership will try to pass this off as normal (I've seen posts where this was the case). So I would like to be prepared with some information when I talk with them.
Thank you for considering my question