Help!!!!

[JoshieDoom]

Alright... im getting
P0405... EGR Voltage in circuit too low.. etc etc... Should I replace my EGR valve??

But i have my cats removed and/or gutted and im getting p0420/p0430 due to no rear 02 sensor.. could the cats have something to do with the EGR system because I do know that in my truck and other vehicles when you remove the cat it throws egr codes due to not enough backpressure.

[35thAnniZ28]

get a tune,get it all removed(air,egr,rear sensors) and call it a day...

[0rion]

I've had luck cleaning EGR valves in the past but not on my LS1. I pulled mine off a long time ago and placed it in the trash. Might try pulling it and cleaning the carbon around the pintle and that *may* cure your problems. My wife used to have a 94 blazer that I would pull and clean at least once a year.

[35thAnniZ28]

its a known fact that egr valves are bitch to clean