Confirmation for O2 Sensor Part Number
08-31-2018, 08:45 AM
#1
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Join Date: 01-12-2018
Location: Kansas
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Confirmation for O2 Sensor Part Number
Hey guys. I need you help to confirm the part number for a 2009 LT 2.2L #2 O2 sensor (after the cat.)
Looking thru the information on this great forum, I believe I need ACDelco 213-3138.
When I visit RockAuto or Amazon, they both say this is the incorrect part for my car.
Also, if you can also identify the part number for the #1 O2 sensor - might as well do both on the 160K mile car!
I appreciate any assistance you guys can give!
Thanks!
Looking thru the information on this great forum, I believe I need ACDelco 213-3138.
When I visit RockAuto or Amazon, they both say this is the incorrect part for my car.
Also, if you can also identify the part number for the #1 O2 sensor - might as well do both on the 160K mile car!
I appreciate any assistance you guys can give!
Thanks!
08-31-2018, 10:11 AM
#2
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Join Date: 08-03-2010
Location: Lake Ronkonkoma, N.Y.
Posts: 3,564
Rockauto shows both up and downstream sensors. Up is #1 and down is #2.
https://www.rockauto.com/en/catalog/...2)+sensor,5132
https://www.rockauto.com/en/catalog/...2)+sensor,5132
08-31-2018, 10:17 AM
#3
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Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,683
GM12611127 #1 Which is ACDelco 213-4195
GM12578576 #2 Which is ACDelco 213-3138
Why would the #2 need replacing? If you have a code the most likely cause is a wire laying on the exhaust pipe. It only monitors the function of the Cat, The #1 does all the A/F work.
If you are thinking P0420 means the sensor is bad, you are 180 degrees wrong; it means it is doing it's job.
GM12578576 #2 Which is ACDelco 213-3138
Why would the #2 need replacing? If you have a code the most likely cause is a wire laying on the exhaust pipe. It only monitors the function of the Cat, The #1 does all the A/F work.
If you are thinking P0420 means the sensor is bad, you are 180 degrees wrong; it means it is doing it's job.
08-31-2018, 01:01 PM
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08-31-2018, 01:12 PM
#6
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Join Date: 01-12-2018
Location: Kansas
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I really appreciate your help/expertise!
I read the following at the site;
"The most common fixes for this DTC seem to be either an exhaust air leak, a wiring problem with the sensor/wiring, or the sensor itself. If you replace the O2 sensor, buy an OEM one (manufacturer brand) for best results."
My plan was;
Please let me know if I am misinterpreting the cause and/or if there is something else I should check before getting the O2 sensor.
I read the following at the site;
"The most common fixes for this DTC seem to be either an exhaust air leak, a wiring problem with the sensor/wiring, or the sensor itself. If you replace the O2 sensor, buy an OEM one (manufacturer brand) for best results."
My plan was;
- inspect the wiring first - if it appears intact and not touching the exhaust, then
- Replace the O2 sensor.
- If the code still appears - then I would tackle the Flex/Cat exhaust.
Please let me know if I am misinterpreting the cause and/or if there is something else I should check before getting the O2 sensor.
08-31-2018, 01:28 PM
#7
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Join Date: 01-23-2009
Location: Fredericksburg, Virginia
Posts: 24,683
While you are inspecting things look at the flex pipe.
BTW; the sensors are NTK/NGK rebranded parts, you might save some money, I definitely would not shop at the GM parts department.
BTW; the sensors are NTK/NGK rebranded parts, you might save some money, I definitely would not shop at the GM parts department.
08-31-2018, 01:51 PM
#8
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Join Date: 01-12-2018
Location: Kansas
Posts: 12
Thanks Don!
Local dealer wants $143 for the sensor.
Amazon ACDelco is $46 and the NGK is $55.
I hope to get to this over the weekend. Also changing out the plugs (with ACDelco) and air filter this weekend.
Local dealer wants $143 for the sensor.
Amazon ACDelco is $46 and the NGK is $55.
I hope to get to this over the weekend. Also changing out the plugs (with ACDelco) and air filter this weekend.
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