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  1. OEM Issues
    I have a 2002 Envoy w 4.2 liter 4x4. It has 230,000 miles and I just bought it. Have no clue if it was serviced when it should have been or not. But the other day it started making a squeal or kind of whistling when shifting from 1st to 2nd. And then it tends to lose power. If l ease into it...
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