Rotors!

[lcducote]

would warped rotors cause the truck to vibrate/shudder while driving???

[Jarrod B]

only when braking.

While driving would be the drive shaft to the rear axle. Most of the time the joints or center carrier going out.

[lcducote]

that would cause a light yet steady vibe/shudder at higher speeds? i dont really feel much at lower speeds. start up around 40-50

[66Bronco]

Could also be ball joints or an out of balance wheel.

[Jonboywv12]

yup sure will, i had to replace the spline and the to back u-joints on the drive shaft.

[Jarrod B]

Are your tires balanced? Rims not bent?

Does the steering wheel shake?

And can you pin point where its comming from?

[lcducote]

i appreciate the help fellas.. anyway i can feel it in the whole truck, i can see my passenger seat shaking while im driving. i feel it the best when my foot is sitting on the gas peddle like its coming through the floor. i also feel it in the steering wheel but only very very slightly. the ball joints were litereally put in this past summer and the tires are balanced and rotated every oil change. as far as the exact location of the vibe/shudder like i said i feel it throughout the truck...?

[Jonboywv12]

something broke
is it similar to this guys case? i tried to help him through it...maybe its the same deal with you.

[lcducote]

idk, not really.. haha. any more ideas?

[ZombieSoldier]

yes you would feel the rotor while trying to stop, but best way to determine while driving is to lightly put your foot on the brake pedal, and depress very gently. most times you will feel the pedal "throb" under your foot, if it is the rotor