P0137/P0138 o2 sensor circuit low

2018 GMC Savanna 3500 6.0L
DTCs: P0137, P0138, P2096, and P2271
Code Descriptions: 02 sensor Circuit high voltage Bank 1 sensor 2, o2 sensor circuit low voltage bank 1 sensor 2, post catalyst fuel trim System too lean bank 1, and o2 sensor signal stuck rich bank 1 sensor 2.
Tools Needed:
Crescent Wrench or 7/8 Wrench (preferred)
Penetrant spray
Dykes or Wire Cutters
Anti-seize Lubricant
After replacement if codes still remain chances system needs to be re-learned by test driving a few miles and then again resetting permanent stored codes.
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[@webrownusa]

Replaced both sensors, 2015 Buick lacrosse 02 sensor circuit high voltage (bank 1 sensor 2) and still getting P0138 code what should I do

[@user-qu1hw1hq2c]

hey mate, have you found an issue? i got RR l322 5.0 v8 and the same issue, all 4 sensors new, new cat's, new MAFs and P0137 (bank 1) is coming back, no clue what to do....

[@blazedONEin87]

So I got p0137 and changed both sensors and I'm still getting the code...2006 chevy aveo...any suggestions on what it might be? Any help is appreciated

[@Skinwalker-Ranch]

which side of the car is p0137 located?

[@TATTDIS]

*Truck

[@smartmotives]

On the left (d/s) upper step area.

[@blazedONEin87]

Drove it around for over 300 hundred miles and still nothing, the check engine light comes right back on

[@smartmotives]

Do you have a four-cylinder or a six cylinder? Some exhaust systems have four (up streams and downstreams) sensors there is bank one and bank two a four-cylinder only has one bank. The code you have is for bank one sensor two sensor which is downstream.

[@blazedONEin87]

@@smartmotives it's 4 cylinder. 2006 chevy aveo