Engine trouble AGAIN!!

[Z71_Silvy]

yah i drive 60+ miles a day. 10mpgs doesnt sound that great. plus those things are too dam monsterous for me

That's only 6 gallons...and at around 24 gallons...

 

[yota.coma]

ok got the code!

P0420

catalyst efficency below normal

advance says its the catalytic converter

please tell me thats all it is

ohh and i put my hand over the exaust, and it didnt feel like much was coming out but ive never actually done that so i dont really know

My Tahoe Cat is going out Its making a crazy sound and im running a little bit hotter. Did yours make a sort of clanking sound before it clogged. I thinks its from I got stuck in water up to the pedals.

no, no unusal noises than what it normally makes.

im gonna jack it up tommorrow and look at the cat and 02 sensors