Oxygen sensor question

[zieglerj-pdm-specialist]

Does a 2004 Yukon XL have an oxygen sensor before and after the catalytic Covertor???

 

[jomulk56]

Yes it should have a pre and post cat O2 sensor on each side unless long tubes, or custom exhaust, have been installed that delete one.

 

[zieglerj-pdm-specialist]

Yes it should have a pre and post cat O2 sensor on each side unless long tubes, or custom exhaust, have been installed that delete one.

What if I want to put dual exhaust on it how would that work??

 

[scottg918514]

Most v8s have 4 sensors, 2 before cat and 2 after

 

[jomulk56]

What if I want to put dual exhaust on it how would that work??

Are you wanting to run true duals off after the cats with 2 mufflers or change out the stock muffler for a 1 in 2 out? Either way you can still run cats and all the sensors, Just have an exhaust shop weld in flanges for the after cat set up.

 

[zieglerj-pdm-specialist]

Found something

Are you wanting to run true duals off after the cats with 2 mufflers or change out the stock muffler for a 1 in 2 out? Either way you can still run cats and all the sensors, Just have an exhaust shop weld in flanges for the after cat set up.

I found out a way to turn off the Oxygen Cat backs Sensors so I can run my dual exhausts I want. Take Care.