95 gmc suburban 5.7 NEED HELP

[heathers135]

Ok, i have 95 gmc suburban 5.7 350 4X4. So over the pass two months its been doing this weird things. You can be driving down road and you go to press gas and its like NOTHINGS THERE. When it is doing this its like its NO gas it wont rev up ,nothing happens. But if u slowly, and i mean slowly and softly press gas it would go. But now its getting even worst! Its like its starving for something??? Never throw code! We thought gas related so new fuel pump, new filter, pressure regulator. Cleaned injectors, and emptied gas tanked so NO dirt/trash. But today check engine light came i did "paper clip"trick and throw code 32 and code 67.
Im asking i know code 32 is egr value but i dont know what code 67 is? And if it is egr, would it really make it run that bad! And not go! And when i say not go i mean it! Oh, and somethings it wont do it, oneday it will run like champ. But next day it will run like sh^t.idk Its like it dont wont to excellerate.

 

[gmc004x4]

Maybe your cat. When they melt inside they can clog up your exhaust

 

[Mastermech]

Scan it

Scan the vehicle first. Look for anything unusual. Check the Throttle position sensor for intermittent operation. It would be good to get the truck to mess up before you scan it. Throwing parts at the truck is not always the best course although I understand why you did it (they are the most common things to fail).