How do you unlock a 2005 Sunfire without the key?

Answer 1

Unless you can perform the old "coat hangar through the top of the window and hook the lock lever" trick, I suggest calling a locksmith.

If you are a member of AAA or one of the other roadside emergency groups, you might have lockout protection as part of the plan. If you're not a member, it's certainly worth considering. Although it grinds my behind to send those guys the $80 per year for my membership, it's worth the peace of mind. They'll tow you. They'll bring you fuel if you run out. They'll send a locksmith if you need one. They'll jumpstart your car. The list goes on ~

If you need to have your car towed just once, it will likely be worth the membership cost, and it's a hell of a lot safer than trying to tow it with a buddy!