Hi, I have a 2009 chevy traverse that I just had the catalytic converters replaced at the dealership for 3800 and then they wanted 600 more to replace the two bad coils. So I towed it home and replace all coils and sparkplugs. It wouldn't turn over at this point so after basic trouble shooting and cleaning the air intake and throttle body and replacing crank shafts positioned sensor. It still have problems starting and I and any time I press on the Gass pedal it stalls out. So it still can't go anywhere. Any help would be much apreciated.
It seems to only crank when I disconnect the PVC tube that feeds into the air intake and I have have to recharge my battery 3 times due to the starting over and over again during the troubleshooting. Tested battery yesterday and it is good. I'm wondering of I need to have the computer reflashed or if it's something else. It also just went over 100,000 miles.

 

Now I'm getting PO50A and PO306 codes.