O2 sensors

10

Asked by Kyleb1979 Mar 28, 2019 at 09:57 AM about the 2012 GMC Sierra 3500HD Chassis SLE Crew Cab 4WD

Question type: Maintenance & Repair

Check engine light came on and the codes were for
the O2 sensors, so I replaced all 4 O2 sensors and
is still throwing multiple codes for the 02 bank 2
sensors, any ideas as to why?

4 Answers
27,620

oilyspill answered 5 years ago

What is engine size? Can you post the code number? Was the only codes, bank 2 sensor 2? Check sensor wiring circuits, check sensor heater circuit where applicable. You may need to check the cat? Also, check fuel trims to see if running rich or lean? Just my opinion.

Mark helpful
10

Kyleb1979 answered 5 years ago

The codes are bank 1 sensor 2, bank 1 sensor 2, bank 2 sensor 2, bank 1 sensor 2, bank 2 sensor 2, and bank 2 sensor 2!

Mark helpful
2,600

Sirkut_Interrupted answered 5 years ago

These are codes the downsteam o2 sensors.. high voltage on the signal wires which means either a short to power on both sides or you bought sensors that are wired wrong and the heater circuit is going in the signal circuit.. p02271 and p02275 are reading rich bc of the 12v going into the signal wires

Mark helpful

Your Answer:

Related Questions

  • O2 sensors 4 Answers

    Check engine light came on and the codes were for the O2 sensors, so I replaced all 4 O2 sensors and is still throwing multiple codes for the 02 bank 2 sensors, any ideas as to why?

    2012 GMC Sierra 3500HD Chassis SLE Crew Cab 4WD

    -

    Maintenance & Repair

  • How many O2 sensors does my 2015 GMC Acadia have? 2 Answers

    I replaced 2 O2 sensors so far but still throwing the O2 code. Wondering if there may be more O2 sensors I didn't find?

    2015 GMC Acadia SLE-2 AWD

    -

    Maintenance & Repair

  • {2010 GMC Acadia SLT O2 Sensors} 2 Answers

    How many upstream sensors and how many Downstream sensors do I have? I dont want to buy the wrong parts

    2010 GMC Acadia SLT-2 AWD

    -

    Maintenance & Repair

  • O2 sensors 1 Answer

    Part name for the 4 o2 sensors

    2003 Chevrolet Silverado 1500 LS RWD

    -

    Maintenance & Repair

  • O2 sensors 2 Answers

    Information on when to replace O2 sensors

    2006 Chevrolet Impala 3.5L LT FWD

    -

    Maintenance & Repair

Looking for a Used Sierra 3500HD Chassis in your area?

CarGurus has 616 nationwide Sierra 3500HD Chassis listings starting at $28,044.

ZIP:

Own this car?

Share your experience with others.

2012 GMC Sierra 3500HD Chassis

Write a car review

Review another car

Shortcuts

Search GMC Sierra 3500HD Chassis Questions

CarGurus Experts

Related Models For Sale

Used GMC Sierra 3500HD
199 Great Deals out of 7,292 listings starting at $12,999
Used Chevrolet Silverado 3500HD Chassis
17 Great Deals out of 2,627 listings starting at $10,800
Used Chevrolet Silverado 3500HD
312 Great Deals out of 13,071 listings starting at $7,500
Used Ford F-350 Super Duty Chassis
122 Great Deals out of 5,388 listings starting at $5,995
Used GMC Sierra 2500HD
507 Great Deals out of 23,121 listings starting at $3,950
Used Ford F-350 Super Duty
683 Great Deals out of 29,864 listings starting at $4,950
Used Chevrolet Silverado 2500HD
983 Great Deals out of 39,659 listings starting at $2,495
Used RAM 3500
434 Great Deals out of 16,396 listings starting at $9,950
Used RAM 3500 Chassis
64 Great Deals out of 3,820 listings starting at $6,990
Used Ford F-450 Super Duty Chassis
11 listings
Used GMC Sierra 1500
1,851 Great Deals out of 70,249 listings starting at $1,900
Used GMC Yukon
717 Great Deals out of 14,385 listings starting at $2,400

Used Cars for Sale

2019 GMC Sierra 3500HD Chassis For Sale
9 listings starting at $28,044

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.