Vibrations at around 45-55 mph!!!

Black Smokin Duramax · 09-19-2008, 01:18 PM

I have an 03 2500HD crewcab short bed, I've had a very annoying vibration at a speed 45-50mph, I've had it into the tire shop a 3 times telling them to check for out of round and balance, they tell me they are good, bfgoodrich 28575r16 I still think it might be a bent rim or tire, but cant tell, I've had the rear end serviced, transmission serviced, driveline balanced, shocks replaced will billstiens can't seem to get rid of it, it is extremely annoying and right on que 45 mph. Any advice or suggestion would help.

86burgandyss · 09-19-2008, 01:23 PM

Have you checked your u joints?? I had a bad vibration tha started around 45-50mph. Had that vibration for about 10,000 miles before I found out the ujoint at the rearend was bad. So bad in fact I am amazed it didnt break. had to have therear yoke replaced on the drive shaft. I had my tire balanced, then rotated and balanced al before I found the bad u-joint.

**TYREBOYZ_DEMAXIN** · 09-19-2008, 01:51 PM

did you notice a difference in the vibration while braking,going into curves or even changing as you drive?
whent they rebalanced the tires did they rotate them or only rebalanced..

**timespentsearching** · 09-19-2008, 02:21 PM

on a gasser i had it did something similar when my knock sensor went out

Black Smokin Duramax · 09-19-2008, 09:32 PM

Yeah, my rear u-joints are new, they did also rotate tire after balance, front u-joints are factor u-joints though, I have heard about problems with the bfgoodrich tires though. I don't notice problem when braking or turning, just as soon as i hit 45 mph my truck start to vibrate, I'm wonder if one of the belts in one of the tires is bad.

86burgandyss · 09-19-2008, 10:43 PM

If one of your belts were bad you would feel a difference when you had them rotated. If it was on the front you would have a pull to the side that was bad. That is my experience anyway.

**Tow Master** · 09-19-2008, 10:57 PM

Man there could be a ton of things. Do you feel it in the seat or in the steering wheel? Did it get any better or worse after the tire shop rotated the tires?

bigblue · 09-20-2008, 06:33 AM

I have an 03 2500, same thing was happening found out it was the wheel bearings, replaced and it was fine. have you checked them?

Black Smokin Duramax · 09-21-2008, 08:20 AM

Haven't checked the wheel bearings, I feel it under the seat. I will have to try and check the bearings, it's about the only thing i haven't done.

86burgandyss · 09-21-2008, 08:42 AM

Did you have both drive shafts balanced as one unit after you did the ujoint? If you are feeling it in your seat, I would guess that it is in the drive shaft or rear end.