Replace a lost key?

I doubt cargurus does that, BUT it's simple to go to a copy of the key to a key shop and call it good. IF you don't have a copy, take VIN to a dealer. You will probably pay an ugly price for it, but it will take you out of your misery. I lost my key fob on my VW and I had to buy a new fob AND then have it programmed to read the transmitter. NOT cheap.. esp VW

You'll need to call a locksmith. The vehicle is too old for the key codes to still be on file with GM. If the vehicle uses a transponder key the new key will have to be programmed to the vehicle as well. Hope that helps! Jim