What is an oxygen sensor and how is it used in Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL's engine management system?

An oxygen sensor is a galvanic battery that produces a small voltage output in response to the amount of oxygen in the exhaust gases. This voltage signal is crucial for the feedback loop between the oxygen sensor and the Powertrain Control Module (PCM) to maintain the perfect air/fuel ratio of 14.7:1 that the catalyst needs for optimal operation. All vehicles covered have On-Board Diagnostics II (OBD-11) engine management systems, which means they have the ability to monitor the performance of the catalytic converter. All models covered by this manual have four heated oxygen sensors: one upstream sensor per cylinder bank and one downstream sensor per cylinder bank. Special care must be taken whenever a sensor is serviced, as they are extremely delicate and cannot be dropped or handled roughly. The upstream and downstream oxygen sensors are heated to speed up the warm-up time during which the sensors are unable to produce an accurate voltage signal. The circuit for each oxygen sensor heater is controlled by the PCM. To remove the upstream or downstream oxygen sensor, the vehicle must be raised and securely placed on jackstands. The sensor electrical lead must be traced to the connector and disconnected before unscrewing the sensor with an oxygen sensor socket. If the sensor is difficult to loosen, penetrating oil can be sprayed onto the sensor threads and allowed to soak in for a while. When installing the old sensor, anti-seize compound should be applied to the threads to facilitate future removal. If installing a new oxygen sensor, it's not necessary to apply anti-seize compound to the threads as they already have anti-seize compounds on them. The installation process is the reverse of removal, and the sensor must be tightened to the torque specifications.

Genuine GMC Yukon Oxygen Sensor

Oxygen O2 Sensor

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31 Oxygen Sensors found

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GMC Yukon Sensor Assembly, Heated Oxygen(Pre, Catalyst Bank 1 Se
Part Number: 12659516
$53.98 MSRP: $112.10
You Save: $58.12 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 12637679
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015-2020 GMC Yukon | 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, 4 DOOR, 4 DOOR SUV | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Sensor Assembly, Heated Oxygen (Pre, Catalyst Bank 2 S
Part Number: 12666673
$42.74 MSRP: $88.74
You Save: $46.00 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2020 GMC Yukon | 1500 4 DOOR SUV, 1500 4 DOOR UTILITY, 4 DOOR, 4 DOOR SUV | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Sensor Assembly, Heated Oxygen (Position 3)
Part Number: 12609457
$51.09 MSRP: $106.10
You Save: $55.01 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor, Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2014 GMC Yukon | 1/2 TON, 3/4 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Yukon Sensor,Heated Oxygen(Position 2)
Part Number: 12589321
$69.45 MSRP: $144.20
You Save: $74.75 (52%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 GMC Yukon | 1/2 TON, 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L
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GMC Yukon Sensor Assembly, Heated Oxygen (Position 2)
Part Number: 12583804
$52.34 MSRP: $108.68
You Save: $56.34 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2014 GMC Yukon | 1/2 TON, 3/4 TON, XL 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.2L, 8 Cyl 6.2L Flex
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GMC Yukon Sensor,Heated Oxygen(Position 2)
Part Number: 12572705
$86.78 MSRP: $180.18
You Save: $93.40 (52%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2006 GMC Yukon | 1/2 TON, 3/4 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 6.0L, 8 Cyl 8.1L
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GMC Yukon Sensor Asm,Heated Oxygen (Position 3)
Part Number: 19209808
$50.94 MSRP: $105.76
You Save: $54.82 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 12575389, 19256731, 25333812, 12583806, 19210711, 12573168
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 GMC Yukon | 1/2 TON, 3/4 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 6.0L
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GMC Yukon Sensor,Heated Oxygen(Position 2)
Part Number: 12587785
$51.06 MSRP: $106.02
You Save: $54.96 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2005 GMC Yukon | 1/2 TON, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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GMC Yukon Sensor Asm,Heated Oxygen (Position 3)
Part Number: 19209812
$71.11 MSRP: $147.66
You Save: $76.55 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 19210423, 25333817
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 GMC Yukon | 3/4 TON, XL 3/4 TON | 8 Cyl 6.0L
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GMC Yukon Sensor Assembly, Htd Oxy (Post, Catalyst Bank 1
Part Number: 12670253
$37.12 MSRP: $77.06
You Save: $39.94 (52%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Lower Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Yukon | , 1/2 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Sensor Assembly, Htd Oxy (Pre, Catalyst Bank 2 S
Part Number: 12687606
$36.51 MSRP: $75.82
You Save: $39.31 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor, Upper Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Yukon | , 1/2 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 6.2L
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GMC Yukon Sensor,Heated Oxygen(Position 3)
Part Number: 12599866
$66.71 MSRP: $138.49
You Save: $71.78 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006 GMC Yukon | 1/2 TON, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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GMC Yukon Sensor,Heated Oxygen(Position 1)
Part Number: 12576131
$49.46 MSRP: $102.72
You Save: $53.26 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor, Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 GMC Yukon | 1/2 TON, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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GMC Yukon Sensor Assembly, Heated Oxygen
Part Number: 12562943
$59.74 MSRP: $124.04
You Save: $64.30 (52%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 GMC Yukon | XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex
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GMC Yukon Sensor Assembly, Heated Oxygen
Part Number: 12565397
$64.97 MSRP: $134.91
You Save: $69.94 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 12563346
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2002 GMC Yukon | XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 6.0L, 8 Cyl 8.1L
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GMC Yukon Sensor Asm,Heated Oxygen (Position 2)
Part Number: 19178961
$56.63 MSRP: $117.59
You Save: $60.96 (52%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 25315809
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2000-2002 GMC Yukon | XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L
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GMC Yukon Sensor Asm,Heated Oxygen (Position 3)
Part Number: 19209815
$84.47 MSRP: $175.40
You Save: $90.93 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor, Rear Oxygen Sensor
- Replaces: 12590847
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 GMC Yukon | 1/2 TON, 3/4 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 6.2L
View related parts
GMC Yukon Sensor Assembly, Htd Oxy(Pre, Catalyst Bank 1 Se
Part Number: 12668435
$46.73 MSRP: $97.02
You Save: $50.29 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Oxygen Sensor, Upper Oxygen Sensor
- Replaced by: 12721347
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 GMC Yukon | , 1/2 TON, YUKON XL/DENALI XL/ESCALADE ESV, YUKON/DENALI/ESCALADE | 8 Cyl 5.3L, 8 Cyl 6.2L
View related parts
GMC Yukon SENSOR ASM,HTD OXY<DO NOT USE, CONTACT TECH SPECIALIST
Part Number: 19355306
$56.58 MSRP: $117.50
You Save: $60.92 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor
- Replaces: 19178116, 25163080, 25312201
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2002 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON, XL 1/2 TON, XL 3/4 TON, YUKON/DENALI/ESCALADE | 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 5.7L, 8 Cyl 6.0L
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GMC Yukon Sensor,Exhaust Oxygen
Part Number: 19211437
$18.54 MSRP: $33.26
You Save: $14.72 (45%)
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor
- Replaces: 19178952, 25171573, 25166816, 25171574, 25162693, 25106073, 25107378, 25165118, 25171581, 25132068, 25165120, 25162600, 19178953, 19178943, 25133185, 25133076, 19178919, 25162753
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 GMC Yukon | CLASSIC 2 DOOR 1/2 TON, CLASSIC 4 DOOR 1/2 TON | 8 Cyl 5.7L

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1-20 of 31 Results

GMC Yukon Oxygen Sensor

The Oxygen Sensor in GMC Yukon vehicles is vital in determining the amount of unburned oxygen in the exhaust; this is used to enhance the air-fuel mixture and cut on emission. The sensor creates a voltage signal proportional to the oxygen concentration and the signal is then used by the engine control computer to adjust the fuel injector timing. Contemporary Yukons come with two, or, depending on the powertrain, four oxygen sensors, with the upstream sensors delivering primary data for immediate optimization. GMC Yukons come equipped with oxygen sensors made from zirconium dioxide and, possibly, both narrow-band and wideband sensors. The narrow-band sensors produce voltage signal that indicating from rich to lean condition and the wide-band sensors give wider voltage indication for better air-fuel ratio control. Oxygen sensors can also get contaminated over time because of which emission levels and fuel consumption will improve. Outright checks on performance alongside certain recommended policies such as emission standards' compliance require a regular schedule of maintenance.

Each OEM GMC Yukon Oxygen Sensor we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

GMC Yukon Oxygen Sensor Parts Questions & Experts Answers

Sensor Assembly, Heated Oxygen (Position 3)(Post, Cat)
12615194
Q: What is an oxygen sensor and how is it used in Chevrolet Avalanche,Silverado,Suburban,Tahoe,GMC Sierra,Yukon,Yukon Denali and Yukon XL's engine management system?
A: An oxygen sensor is a galvanic battery that produces a small voltage output in response to the amount of oxygen in the exhaust gases. This voltage signal is crucial for the feedback loop between the oxygen sensor and the Powertrain Control Module (PCM) to maintain the perfect air/fuel ratio of 14.7:1 that the catalyst needs for optimal operation. All vehicles covered have On-Board Diagnostics II (OBD-11) engine management systems, which means they have the ability to monitor the performance of the Catalytic Converter. All models covered by this manual have four heated oxygen sensors: one upstream sensor per cylinder bank and one downstream sensor per cylinder bank. Special care must be taken whenever a sensor is serviced, as they are extremely delicate and cannot be dropped or handled roughly. The upstream and downstream oxygen sensors are heated to speed up the warm-up time during which the sensors are unable to produce an accurate voltage signal. The circuit for each oxygen sensor heater is controlled by the PCM. To remove the upstream or downstream oxygen sensor, the vehicle must be raised and securely placed on jackstands. The sensor electrical lead must be traced to the connector and disconnected before unscrewing the sensor with an oxygen sensor socket. If the sensor is difficult to loosen, penetrating oil can be sprayed onto the sensor threads and allowed to soak in for a while. When installing the old sensor, anti-seize compound should be applied to the threads to facilitate future removal. If installing a new oxygen sensor, it's not necessary to apply anti-seize compound to the threads as they already have anti-seize compounds on them. The installation process is the reverse of removal, and the sensor must be tightened to the torque specifications.