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  1. #1

    Default 4x4 keeps blowing fuse.

    My 1999 K3500 keeps blowing the fuse for 4x4. I replaced the entire wire harness and installed new protective shield and heat tape on it, so it shouldn't be the wiring. Any ideas?

  2. #2

    Default

    Unplug the t-case and see if it blows.

    Unplug the control module and see if it blows.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  3. #3

    Default

    It looks like there is still a short circuit in the interlock or any of the lights beacuse they are all connected to the same fuse. Check the wirings again for any breakage and also make sure your battery and wires are in good shape.

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