Chris writes: I have an ‘04 Chevy Silverado 2WD pickup with the 4.3 6cyl and auto tranny. Between 1100 @1300 rpms I get a strong vibration that you can feel in the floor of the truck. It happens mostly while coasting or decelerating. It feels like the vibration you get driving a manual transmission in a
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Piston Slap: I’m Pickin’ Up Good Vibrations Edition