This thing is driving me crazy. It's a '94 4WD, S-10 Tahoe with a 4.3L Vortec engine. At idle, she shakes and rattles and when you're driving at speed, it's surging. Even with my foot off the gas I can still feel the surge. I had the EGR valve replaced a few months ago, but the trouble code I get out of it is 32 again (EGR). Could that $200 piece of &!!@$ have gone bad again, or could there be something else I should be looking for? The catalytic convert has been taken off, but it's only been off about 3 weeks now. "I heard" that the converter could have gotten clogged and plugged the EGR valve. Around my neighborhood, neither Autozone nor Advance Auto has the code scanner plug for my vehicle. I guess that would be too easy right? Any helpful hints? I sure would appreciate it.