ignition interlock

  1. Tommy Frantz

    97 K3500 automatic to manual transmission

    Guys, I'm converting my 97 K3500 from an automatic to a manual transmission and I have a question about how the interlock for the ignition works. When you tried to turn the key to LOCK there used to be a little lever that you'd depress to be able to do this. This function kept you from turning...
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