Is the check engine light comming on during any of this? The bolt may be a tranny mount, at least that's where most trucks put them. Vibrations, have you checked the frame itself? Toyota trucks are known for rusted frames. If no check engine light check you throttle bore for operating without stickin, clean it with TBI cleaner. Check for stuck EGR pintle. Also there was an upgrade to rear leaf springs, did yours get it?
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Thursday, September 10th, 2009 AT 3:14 PM