Join Date: Oct 1999
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Re: 1997 tahoe, shuddering at highways speeds
i know you said 'only when you let up on the accelerator' and this would happen at all times - but for giggles and a just in case, check your tires for any bulges or potential blowout spots.
also check your tie rods, and steering stuff. how are your cv joints?? jack each tire up and spin it. watch the cv shaft and make sure its straight when it spins.