Codes P0050, P0059, and P0155 2010 Yukon Denali XL

[Fubar0715]

I literally changed the up stream O2 sensors last week. I had the P015 code for both sides and decided to do them at the same time. I think I got the parts from RockAuto shipped for about $80. The socket was picked up from Harbor Freight for $8. You will need a 3/8 ratchet and the socket along with a short piece of pipe to get extra leverage on the ratchet. TBH, if I knew exactly what to expect-would have taken an hour, tops! Additionally, didn't need to jack up the truck or put on a lift. Easy Peasey!

 

[91RS]

Those are all for the bank 2 sensor 1 oxygen sensor so in this case it is a fairly reasonable assumption that sensor is bad. I would go ahead and replace both pre-cat sensors. Use ONLY GM parts here.

 

[gooffeyguy]

This is a 2 year old thread. The OP got his answer in post #2

 

[wsteele]

Sweet!
Thank You!

PM sent.

 

[Fubar0715]

Well, now I feel like an A-hole!!!!!!!! I saw it as a newly posted but didn't check the OP's initial comment date!