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Hello all, this maybe a little long, but I have done a lot to get rid of this vibration/wobble...I'll try to provide as much info as possible, this all started with new tires. (Part already replaced/fixed at bottom).
I have a 2007 GMC Sierra, 4 door, short bed (6ft) with 4.8L.
About 1.5 months ago I bought 4 new tires (Michelin LTX MS2 LT 245-70-17) I could not get rid of a vibration after numerous balances at Sears, I finally told them to get me a new set of tire, I got the same type except I went with the "P" series and not the LT series. That helped the vibration/wobble out a lot, but it's still there.
I took the truck to Firestone, and they did their undercarriage inspections, removed the tires (checking brakes), they stated the calipers were working as needed, checked to make sure all tie rod ends were ok, they are, there was slight play in the lower ball joints, other than that the only other thing they could find was the clips the brake shoes clip into were rusted, they removed most of the rust and put lube on the contact points and believe it or not that took a lot of the vibration/wobble out. But after a few days of driving it became worse again.
So, I bought new brakes and new clips and plenty of lube, that really took out most if not all the vibration, but again after a few days the vibratoin came back, but not nearly as bad.
So, my question is, is it possible for the master cylinder to be applying pressure while driving, applying pressure to the calipers making the brakes slightly ride the disks (a valve in the master cylinder possible broken and letting fluid by)?
I cannot fell this in the steering wheel BTW, it's all in my seat and where my feet are while driving.
Things I have changed prior to me posting this:
Front and rear U-Joints
Rear shocks
Front brakes and metal clips
Front rotors turned
Sorry this is long, but I wanted to try most everything I knew prior to posting. Hopefully I have explained myself descent.
About 1.5 months ago I bought 4 new tires (Michelin LTX MS2 LT 245-70-17) I could not get rid of a vibration after numerous balances at Sears, I finally told them to get me a new set of tire, I got the same type except I went with the "P" series and not the LT series. That helped the vibration/wobble out a lot, but it's still there.
This could be something as simple as the monkey at Sears dented/bent one of your wheels. Did you have Firestone pull the tires off the rims to inspect them?
This could be something as simple as the monkey at Sears dented/bent one of your wheels. Did you have Firestone pull the tires off the rims to inspect them?
No, I did not do that, however, I did look at them as they were spining while at sears and they appeared to be still round.
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