Vibration at speed...

[Dante04SRT]

I've tried to locate this sound and vibration I always have when at speed. I'm hearing a slight droning and definitely getting some vibration coming from what feels like the rear end.

I've rotated tires (almost new) and even had the driveshaft completely rebuild/rebalanced and the symptoms remain.

I'm beginning to think that it's either my axle. The droning and vibration occur at 60+ mph and doesn't go away whether I'm on or off the throttle.

Has anyone had a symptom like this?

My truck is an '05 with 153k on it - I plan on changing the diff fluid after Christmas but doubt my problem could be fixed with something that easy. It feels like it could be a bearing in the axle itself. Possibly even the pinion bearing - The truck does make a clunk when shifting from 2-3 - sounds like the pinion is moving too much.

Are the bearings in the SRW axle replaceable easily or am I better off taking it to a shop? I'm very capable with doing most any mechanic job, but I can't afford to have the truck off the road for more than a weekend.

Thanks

[superBADduty]

Check your u-joints, maybe the driveshaft needs to be balanced as well.


Sent from my Autoguide iPad app

[Dante04SRT]

Originally Posted by superBADduty

Check your u-joints, maybe the driveshaft needs to be balanced as well.


Sent from my Autoguide iPad app

I did, as part of my rebuild on the driveshaft - The ujoints were replaced with the oem spec Spicers. I also had the donut-looking damper section completely removed and replaced with a new tube. You could see the rubber that held it in place beginning to crack. The driveshaft guy was the one who suggested it - He said he's seen them fail a few times on these trucks and recommended getting rid of it and rebalancing.

The problem is exactly the same now as it was before the shaft was rebuilt, so I can rule it out.

[Term3]

Do you have any kind of lift kit installed? To me it sounds like alignment problem between the transmission flange and the pinion flange.