In 2001 Guerrero had no team at the beginning of practice for the Indianapolis 500. Dick Simon Racing then needed a driver for their No. 7 Yellow Transportation Dallara IR01-Oldsmobile Aurora Indy V8 after Stéphan Grégoire left the team. Guerrero eventually managed to qualify the car. On the final day of qualifying Grégoire began driving for Heritage Motorsports and bumped Guerrero from the field and Guerrero failed to qualify for the second consecutive year.