My GTA was throwing a code 36, along with the occasional code 34.

To get rid of the code 36, first I replaced the battery, then the burnoff relay, then finally the MAF.

Still had a 34 though.

I replaced the MAF relay yesterday and I was code-free for the first time since I bought the car.

It lasted a day. Tonight it popped a code 33 on the way home.

Now that I've got new relays, and a new MAF, and the wiring appears to be ok (I haven't done a continuity check yet), what should I be looking for?

 

Check the minimum air and TPS setting. Try dropping the TPS setting below the .45v mark if its not already there.

 

http://www.deadbird.org/tech/33code1.gif
http://www.deadbird.org/tech/33code2.gif

May/may not help...

 

You might try checking your VSS sensor. When I was working all the roddents out of my project truck w/ a 385 tpi I did not have a VSS set up in my system. For almost a year I chased all sorts of intermittent problems and most wore MAF related. I ended up buying a VSS sensor kit fom Street and Performance. After I reset my initial idle I have been problem free for 60,000 miles. Just a thought! Hope you get it figured out.