It doesn't sound like it's totally "bricked", but because your truck is still at the Level 3 tune, you're not going to be able to try any "Pegasus" reprogramming. PHP is going to have to get involved. Try getting through on their Live chat" link:
FlashChat v6.0.8
I just tried there, but no one seemed to be home. You might have better luck. Many people have used it successfully. At least your truck is not disabled.
- Jack