[hatzie]

You don't need to buy circle plus transponder keys online. These aren't sidewinder keys.
Any real old fashioned hardware store that cuts keys will usually have Circle Plus blanks. I believe some of the Borg big box retailers have em. I bought a spare key at Rands hardware in Plymouth. I had to do a security learn but that's not the end of the world.
If you want GM or the Chevy Bowtie or the Pontiac symbol or the Cadillac symbol or the Buick symbol then buy em online.

 

[hatzie]

^+1 with Doug! Very common for door locks to seize up due to lack of use. Everyone always uses their fob, power lock/unlock buttons or external keypad instead of the 'ol key-in-the-door-hatch-trunk method. Fwiw, I've had locksmiths tell me to shy away from graphite, liquid or powder, to free up locks. They claim it'll eventually gunk them up and make matters worse. Wd-40 is their go-to for cleaning/unbinding locks.

WD-40 to un-bind and rinse the garbage out.

WURTH HHS to lube em so it doesn't happen again.

 

[hatzie]

You don't have to buy key blanks online for these cars. The B bodes aren't even Circle Plus keys.
Drive to your local hardware store and have a key cut. Ace etc will have blanks. GM used millions of them.
When the kid behind the counter cuts you a key that turns the ignition you have a spare ignition key.