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  1. Allen97

    High idle

    Ok I need some advise. I have a 97 Sierra 1500 2wd ext cab. I just swapped the 4l60E for an NV3500. It wasn’t doing it at first but now every time I hit the clutch while moving it isles up to about 2 grand in between gears and stays there until I either hit the next gear or come to a complete...
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