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harmonic damper
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  1. 262ci Forum (4.3)
    1994 GMC Sonoma SLS 4.3L zVin Twice now I have replaced my harmonic damper with a new one and when I go to start the truck, the engine has a shake to it. When I change it back to the old dampener, its fine. The first time I did this, it was the cheapest dampener possible. This time I got one...
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