* Key: The most common method. Use your key in the driver's side door lock.
* Remote Keyless Entry (RKE): If your Suburban is equipped with remote unlocking, press the "unlock" button on your key fob.
* Manual Keypad (if equipped): Some models had an optional keypad on the driver's side door. You would enter your programmed code to unlock.
* Spare Key: If you've lost your primary key, use a spare key.
* Towing Service: If you've locked your keys inside, a locksmith or towing service can unlock your Suburban without damaging it.
* GM OnStar (if equipped): If your Suburban has OnStar, they may be able to assist remotely (depending on your plan and service activation).
* Professional Locksmith: A locksmith specializes in unlocking vehicles without causing damage. This is the best option if you're locked out and don't have a spare key or RKE.
If you're having trouble with any of these methods, provide more detail about the specific issue you are encountering, and I may be able to offer more specific advice.