Question about 1999 Chevrolet Blazer

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99 blazer 4.3 4speed 236 gm 272 ratio bad shimmy

Bad shimmy

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A little more information would help like what kind of conditions does it happen, speed, road type and condition, etc. However I am guessing there are some front end components worn out as were very typical on these vehicles. Lower ball joints and idler arms typically only last about 60,000 miles. Checking the idler arm is easy, jack up the passenger side front of the vehicle and grab the tire and try moving it back and forth, if it seems sloppy it will need the arm replaced. Ball joints are a little more difficult to check. You need to jack each side of the vehicle up by the lower control arm as close to the wheel as possible so that the weight of the vehicle is still on the suspension. You will need a long pry bar to put under the tire. Try lifting the tire more while watching the balljoint for any movement. When you do that it should try to pick up the whole vehicle and not move seperately at the control arm. My guess is that you need balljoints and an idler arm. Hope this helps.

Posted on Jan 03, 2009

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