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  1. 4x4 Drivetrain
    Hello all, Just purchased a 2004 GMC Envoy with 106k miles on it very recently and I sort of already have experience with this car since my dad owns an '02 Trailblazer EXT. In his car, which I found out through the manual, you can engage A4WD or 4HI at any speed in any gear. I've known this...
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