Oxygen Sensors

[Undisputedse]

Hello all!!! I have a 99 slt yukon and was wondering how many sensors do I have on my truck and about how much would it cost to replace them all, parts and labor. Thanks!

 

[SunlitComet]

2 in front and 2 in the back of the converters. use only delco or delphi unit about $45 each at amazon.

rear: Delphi es20000

front: Delphi 20317

each cylinder bank gets it own front and rear. if the old ones come out easily ut should be .5 hours for each.

 

[TigerEyz3]

DIY!!! They're easy to access and the only tool you need is an O2 sensor socket - you can do it in your driveway or garage.

 

[SPLmonster13]

If you pull the sensor, fill it with RTV silicon, it will act as a dummy sensor.

 

[nimrod.sixty9]

If you pull the sensor, fill it with RTV silicon, it will act as a dummy sensor.

Are you saying the post CAT sensors only work for detecting the CATs efficiency?

 

[SunlitComet]

they play a minor role in the fuel trim to help the cats do their job.