GM Repair Problems? Ask GM Repair Expert Now.
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Unfortunatly, there is no other way than calling a locksmith. They have the correct tools to unlock the doors without damage.
You could also call your insurace company and see if you have lock-out insurance.
please do not pay me for this answer, this is a freebie.
take proof of ownership to the dealer and they will be able to cut you a new key from the V.I.N. #. if you do not have lock out coverage then this is the most cost effective way and you now have a spare.