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  1. H

    Terrible 8 mpg 1996 silverado

    I get 8 mpg in town with my 1996 chevy silverado ext cab 5.7 v8 4x4 just did plugs wires cap and rotor pcv valve cleaned tb and trimmed the lip off the throttle plate blocked off the vortec box and I drive it like a grandpa what's going on? I've searched around the forums and see people getting...
  2. H

    my 1990

    1990 gmc 1500 sle
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