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How to reset the IAC (Idle Air Control)

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  • How to reset the IAC (Idle Air Control)

    If your IAC is showing weird counts and wont change, here's how to reset it:

    1.With the engine warmed up and the truck OFF, jumper the 2 top right ports on the ALDL.
    2. Turn the key to the ON position (you should hear the IAC spinning).
    3. Wait 30 seconds, then turn the key off.
    4. Remove the jumper.
    5. Pull the ECMB fuse out, wait 30 seconds, then put it back in.
    6. Start the truck. Truck should be able to find its idle position.
    --------------------------------
    SyTy Registry
    InternationalSyTyRegistry.com
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