What are the important considerations when servicing an oxygen sensor?

When servicing an oxygen sensor, exercise caution. Oxygen sensors have a permanently attached pigtail and electrical connector that should not be damaged or removed. Keep grease, dirt, and contaminants away from the electrical connector and sensor. Avoid using cleaning solvents as they can cause damage. Handle sensors delicately and avoid dropping them. Apply anti-seize compound during installation, unless it's a new sensor with compound already applied. Install the silicone boot correctly to prevent melting. Removing the upstream sensor may require removing the engine cover or raising the vehicle on jackstands. Disconnect the upstream sensor's electrical connector before removal. The installation process is the reverse of removal, ensuring a secure tightening. For the downstream sensor, raise the vehicle on jackstands and disconnect the electrical connector before unscrewing. Installation is the same as the upstream sensor, with optional anti-seize compound and secure tightening.

Genuine GMC Terrain Oxygen Sensor

Oxygen O2 Sensor

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9 Oxygen Sensors found

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GMC Terrain Sensor Assembly, Htd Oxy(Pre, Catalyst Bank 1 Se
Part Number: 12701634
$57.74 MSRP: $119.88
You Save: $62.14 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Replaces: 12663317
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2021 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1 | 4 Cyl 1.5L
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GMC Terrain Sensor,Heated Oxygen(Position 2)
Part Number: 12639692
$22.71 MSRP: $42.84
You Save: $20.13 (47%)
Ships in 1-3 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:
- 2011-2017 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Terrain Sensor Assembly, Heated Oxygen (Pre, Cataly
Part Number: 12634061
$50.22 MSRP: $90.08
You Save: $39.86 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 12607333
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2012-2017 GMC Terrain | SLE2 SUV, SLT SUV | 6 Cyl 3.0L, 6 Cyl 3.6L
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GMC Terrain Sensor Assembly, Heated Oxygen (Position 1)
Part Number: 12606671
$47.51 MSRP: $98.66
You Save: $51.15 (52%)
Ships in 1-3 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:
- 2010-2014 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Terrain Sensor Assembly, Heated Oxygen (Pre, Cataly
Part Number: 12652845
$44.82 MSRP: $93.06
You Save: $48.24 (52%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Oxygen Sensor, Upper Oxygen Sensor
- Replaces: 12677120
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 2.0L
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GMC Terrain Sensor Assembly, Heated Oxygen(Pre, Catalyst Bank 1 Se
Part Number: 12665061
$41.55 MSRP: $86.28
You Save: $44.73 (52%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2015 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Terrain Sensor Assembly, Heated Oxygen (Position 2, Post, Converter)
Part Number: 12612430
$75.26 MSRP: $136.80
You Save: $61.54 (45%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2010-2011 GMC Terrain | SLE2 SUV, SLT SUV | 6 Cyl 3.0L
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GMC Terrain Sensor,Heated Oxygen(Position 2)
Part Number: 12618010
$58.04 MSRP: $120.51
You Save: $62.47 (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:
- 2010 GMC Terrain | SLE1 SUV, SLE2 SUV, SLT SUV | 4 Cyl 2.4L
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GMC Terrain Sensor Assembly, Heated Oxygen (Post, Catalyst Bank 1 Sensor 2)
Part Number: 12661898
$60.33 MSRP: $125.29
You Save: $64.96 (52%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SENSOR, Computer Control Sensors
- Replaces: 12643903
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2020 GMC Terrain | 4 DOOR SLE2, 4 DOOR SLT1, 4 DOOR SLT2 | 4 Cyl 2.0L

GMC Terrain Oxygen Sensor Parts Questions & Experts Answers

Sensor Assembly, Heated Oxygen (Position 1)
12606671
Q: What are the important considerations when servicing an oxygen sensor?
A: When servicing an oxygen sensor, exercise caution. Oxygen sensors have a permanently attached pigtail and electrical connector that should not be damaged or removed. Keep grease, dirt, and contaminants away from the electrical connector and sensor. Avoid using cleaning solvents as they can cause damage. Handle sensors delicately and avoid dropping them. Apply anti-seize compound during installation, unless it's a new sensor with compound already applied. Install the silicone boot correctly to prevent melting. Removing the upstream sensor may require removing the engine cover or raising the vehicle on jackstands. Disconnect the upstream sensor's electrical connector before removal. The installation process is the reverse of removal, ensuring a secure tightening. For the downstream sensor, raise the vehicle on jackstands and disconnect the electrical connector before unscrewing. Installation is the same as the upstream sensor, with optional anti-seize compound and secure tightening.

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