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    Chassis Vibration 1989 454 when idling

    Hey, My baby (1989 Chevy 3500 7.4L 120K miles) recently started vibrating when idling. It was barely noticeable at first, but it has been getting worse. At first I felt it through the steering wheel, but now the entire chassis vibrates. When I cold start the engine and the idling is at a...
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