06 Silverado 2500 Vibration

February 04, 2024, 02:52 AM

Hotrod Corvette

Being the drive shaft helped it may still be out of balance. I have seen these work.
Balance Masters..the same people that make the toterhome wheel balance adapters.

They make some just for driveshafts.
https://balancemasters.company...iveshafts-c126873596

$125 or so depending on the diameter of the shaft.

February 04, 2024, 12:03 PM

BP758

quote:
Originally posted by TOP38:
quote:
Originally posted by BP758:
Top 38, did you find it?

Not yet, between weather and time I haven't had a chance to look further.

I get that! Soggy out here…

February 04, 2024, 04:51 PM

Eman

FWIW I would pull the rotors and look at the parking brake as others said. I have seen some build up rust in there and the lining come off of the shoes.

February 05, 2024, 02:11 PM

TOP38

Update:
Checked the E brake pads and backing plates. The plates had some rot on the very lower areas but they were OK by the pins that hold the E brake pads on. The pads were rubbing the rotors but only in spots, not the full diameter of the rotor and the pad lining was get loose in spots, likely the original pads. We decided to remove the pad linings on all pads and try that since they were already 1/2 off. I was hopeful they this would cure the issue but once I got on the highway going 60 to 70 it was still there. I also found out that the front driveshaft does not spin when in 2 wheel drive so it's not that either. So it basically leaves the new drive shaft, which looks good when we started the truck on the lift and took it up to about 50 MPH, and the rear end. The vibration is without a doubt worse in the coast no load condition, accel, de-accel and cruising (light load) all have the same vibration. So still looking...

February 05, 2024, 10:41 PM

Footloose

What about the tail stock bushing? Looked at that?

February 06, 2024, 09:09 AM

TOP38

quote:
Originally posted by Footloose:
What about the tail stock bushing? Looked at that?

I assume you mean the bushing that the DS yoke is supported by,,, yes and no, when I installed the ne DS, the yoke slid out an back in normally, it did not feel loose. I also pushed and pulled on the DS after it was installed to get a feel of the busking's condition, felt fine to me.

February 13, 2024, 08:21 PM

jenavet

comon genius knows everything top dragster driver!! its obviously in the differential

February 13, 2024, 09:11 PM

Goob

quote:
Originally posted by TOP38:
Update:
Checked the E brake pads and backing plates. The plates had some rot on the very lower areas but they were OK by the pins that hold the E brake pads on. The pads were rubbing the rotors but only in spots, not the full diameter of the rotor and the pad lining was get loose in spots, likely the original pads. We decided to remove the pad linings on all pads and try that since they were already 1/2 off. I was hopeful they this would cure the issue but once I got on the highway going 60 to 70 it was still there. I also found out that the front driveshaft does not spin when in 2 wheel drive so it's not that either. So it basically leaves the new drive shaft, which looks good when we started the truck on the lift and took it up to about 50 MPH, and the rear end. The vibration is without a doubt worse in the coast no load condition, accel, de-accel and cruising (light load) all have the same vibration. So still looking...

Well, take the shaft back for another look, or have a different shop spin it. Anything can happen. Re-check the wheel balance, it takes a good machine to balance LT tires.
I'd also play with some weights on that shaft, just to see if you can make a change.

February 14, 2024, 08:29 AM

TOP38

quote:
Originally posted by jenavet:
comon genius knows everything top dragster driver!! its obviously in the differential

Mikey

Long time since reading your kind and informative posts!

Haven't ruled that out but I did drain the fluid and it was clean. No metal on the magnetic drain plug so didn't bother taking of the cover. This will the last thing we do.

February 14, 2024, 08:34 AM

TOP38

quote:
Originally posted by Goob:
quote:
Originally posted by TOP38:
Update:
Checked the E brake pads and backing plates. The plates had some rot on the very lower areas but they were OK by the pins that hold the E brake pads on. The pads were rubbing the rotors but only in spots, not the full diameter of the rotor and the pad lining was get loose in spots, likely the original pads. We decided to remove the pad linings on all pads and try that since they were already 1/2 off. I was hopeful they this would cure the issue but once I got on the highway going 60 to 70 it was still there. I also found out that the front driveshaft does not spin when in 2 wheel drive so it's not that either. So it basically leaves the new drive shaft, which looks good when we started the truck on the lift and took it up to about 50 MPH, and the rear end. The vibration is without a doubt worse in the coast no load condition, accel, de-accel and cruising (light load) all have the same vibration. So still looking...

Well, take the shaft back for another look, or have a different shop spin it. Anything can happen. Re-check the wheel balance, it takes a good machine to balance LT tires.
I'd also play with some weights on that shaft, just to see if you can make a change.

Goob

Talked to the guy that made the DS, he wants to drive the truck first. Going to double check the tire balance also, may even tire another set of tires and wheels.