How do you unlock Monte Carlo 2006 without keys?

To unlock a 2006 Monte Carlo without keys, you can use a slim jim or a lockout tool to manipulate the locking mechanism through the door gap. Alternatively, you could try using a coat hanger or a similar tool to reach inside and unlock the door. If these methods are unsuccessful, contacting a professional locksmith or using a tow service may be necessary to avoid damaging the vehicle. Always ensure you have the legal right to access the vehicle before attempting any of these methods.