Truck shaking violently between 35-45 mph

JROMMEL

MEMBER
1935 GMC C1500

1997 GMC Sierra 1500 Truck. Mileage: 133,000.

I recently had a new Tuff Country lift put on my truck and ever since the truck has been shaking. At first it wasn't too bad, but after I went back to have everything tightened it was far worse. I took it back and told Les Schwab what was happening and we went on a test drive. The assistant manager didn't know and had to ask someone else, who simply told me it's because my tires stick out. I didnt get new tires and this never happened with my old lift kit. My two front tires have uneven tire wear as well. The back two are fine. He just told me if I want to get rid of it I must pay new tires and wheels.
I had them ballance the wheels and align my truck, but that didn't solve anything. I'm pretty sure they are just trying to get me to spend more money buying new tires. Any ideas?

3 Replies

MIKE46534

MEMBER
3 POSTS

A cheap easy way to find out if thats the problem is eventhough you have a lift on it you can still put regular size tires and rims on it try puting a set if you have them or for about $20 a each you can get them at your local junkyard and see if it still does it and if it dont then you will know

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Wednesday, September 20th, 2006 AT 11:03 PM

PULSTI

MEMBER
28 POSTS

I have a 94 gmc yukon on 4" lift and 33" super swampers, this is bad for the front end in general.
I had bad wear on the front tires(on the inside) due to bad ball joints, I also had bad shaking around the same speed in the steering wheel and tires and it was from a bad idler arm on the truck. The mud tires also ride different on cement due to large tread.
My mechanic warned/warnes me about the extra wear and tear from the mods but I am willing to sacrafice extra attention and money on the truck. Hope this helps!

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Tuesday, September 26th, 2006 AT 1:43 AM

VEGASMSTRJ