Here'* something you can try if you want to get it going tonight. After cutting the wires hold the wires on the contacts of the pellet of a spare key & start the engine. Once the engine starts remove the wires from the spare key. I've read that if the Vats module loses the signal while the engine is running it will keep running & won't need to read the key pellet to start after that. You still need to do the bypass so the security light will go off. If this works put some tape on the wires so the wire with power can't short out.
1999 Pontiac Bonneville SSEi (son'*)
1997 Chevy Lumina (daughter'*)
2006 Chevy Trailblazer (wife'*)
2006 Chevy Monte Carlo SS (Mine! -Zoom Zoom Zoom)