Quote Originally Posted by Pitcrew View Post
Well apparently according to the dealer tech's. Its the catalytic converter! ?
Exactly. Gm had a campaign for the 01 and 02 GT's where the converters block up. My car wouldnt go over 20mph when mine plugged. Go to the dealer in person and have them look up campaign #05551. As long as you have less than 120,000 miles the dealer will change the cat and the downpipe free of charge. They changed mine, cleared my code all for $0.00

Hope this helps.