Vibration at highway speeds

[GeneralNoobzor]

Hey guys, got an issue.
2004 LT 4wd Tahoe has a vibration issue.

Not sure what it is.
Vibration only occurs between 60-75mph, any faster or slower I cannot feel it.
Feels like it is in the steering wheel and my seat.

I have recently done the:

• Inner and Outter tie rod ends
• Replaced the idler & pitman arm
• Balance
• Alignment
• (Tranny was replaced 8 months ago)
• Front drive shaft u-joints are solid.
• Front drift shaft is solid and doesn't move oddly.
• Also has new shocks

I am going to

• Rotate the tires
• Rebalance the tires (probably road force balance)

Anybody have any ideas of what this could be?

 

[Big Buttons]

More than likely it's the tires or the drive shaft. Tires could be balled inside.

 

[Goodinblack]

Check drive shaft. Maybe a weight flew off

 

[GeneralNoobzor]

More than likely it's the tires or the drive shaft. Tires could be balled inside.

Tires are good, I just got them 4k miles ago.

I was looking at the driveshaft earlier, everything was tight.
I guess if it doesn't go away after the rotation/roadforce balance
I will remove the front drive shaft and drive around to see if that helps,
then I will get it rebuilt.

 

[livingez_123]

Tires are good, I just got them 4k miles ago.

Does not mean a thing, tires can slip internally.