05 Tahoe no cats

[Rocket Man]

Just out of curiosity, did you delete the downstream O2 sensors in the tune? Not that it would matter other than throwing a code for cats not working.

 

[Dcolli9881]

Just out of curiosity, did you delete the downstream O2 sensors in the tune? Not that it would matter other than throwing a code for cats not working.

Haven’t had access to a tuner yet to do so

 

[Fless]

I would question your scanner app; can you confirm by using a different scanner to read the MAF values and the fuel trims?

Is the replacement MAF OE GM? How do we know it's good?

 

[Rocket Man]

Haven’t had access to a tuner yet to do so

So you’re getting codes then? There must be some being thrown. What exactly are you seeing as far as DTC’s?

 

[Dcolli9881]

So you’re getting codes then? There must be some being thrown. What exactly are you seeing as far as DTC’s?

 

[Dcolli9881]

I would question your scanner app; can you confirm by using a different scanner to read the MAF values and the fuel trims?

Is the replacement MAF OE GM? How do we know it's good?

Bought a brand new one from auto zone it’s a Delphi brand one and it’s the only one I have access to right now

 

[Dcolli9881]

Did fuel pump still no change another ideas

Bought a brand new one from auto zone it’s a Delphi brand one and it’s the only one I have access to right now