Please do not go through a dealer, as the price will be several hundred for just the PCM. Find one on eBay, a local junkyard, or my favorite place American Camaro (link below). They have the 3.8 v6 pcm for $95. There are 2 on eBay, both below $20.
If you can change your oil, you can swap out the pcm. All you need is a small socket and ratchet set. It is directly below the glove box on the passenger side. Disconnect the battery, remove the lower panel, disconnect the computer, reconnect new computer and battery, done. 20 minutes tops.
Good luck!