How to replace the Heated Oxygen Sensor 2 on Buick Terraza?

The J 39194-B Heated Oxygen Sensor Wrench (J 39194-B) must be used to remove the Heated Oxygen Sensor 2 while maintaining the integrity of both sensor's pigtail connections since removal may damage operational functionality. The oxygen sensor requires careful handling to prevent drops while preserving both the in-line electrical connector and louvered end free from contaminants and dirt and grease. The sensor and vehicle harness connectors should never receive contact cleaner or similar materials. Additionally maintain safe conditions around the sensor pigtail and harness wires to prevent damage. Managing the lead wires by avoiding bends and keeping the oxygen sensor ground wire in position will maintain your engine performance. The vehicle harness connector peripheral seal must stay intact to stop water infiltration while you use Packard's Crimp and Splice Seals Terminal Repair Kit for fixes instead of soldering. Secure removal of the heated oxygen sensor requires engine temperatures at or above 48°C (120°F) to avoid breaking the thread connection. Turn OFF the ignition followed by vehicle lift then disconnect the sensor harness connector. Using the J 39194-B back out the heated oxygen sensor. Special thread protection comes in the form of anti-seize compound GM P/N 5613695 or its equivalent which must be applied to the heated oxygen sensor threads during installation. Embed the HO2S 2 sensor and apply 41 N.m (30 lb ft) torque while connecting its electrical connector and returning the vehicle to the ground.

OEM Buick Terraza Oxygen Sensor

Oxygen O2 Sensor

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4 Oxygen Sensors found

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Buick Terraza Oxygen Sensor Part Number: 12569429
$54.71 MSRP: $111.12
You Save: $56.41 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Buick Terraza | CX, CXL | 6 Cyl 3.5 L GAS
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Buick Terraza Oxygen Sensor Part Number: 19209807
$87.79 MSRP: $178.30
You Save: $90.51 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor
- Replaces: 12570149, 12574924, 12572772
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2007 Buick Terraza | CX, CXL | 6 Cyl 3.5 L GAS, 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
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Buick Terraza Oxygen Sensor Part Number: 12594452
$54.19 MSRP: $110.06
You Save: $55.87 (51%)
Ships in 1-3 Business Days
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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:
- 2006-2007 Buick Terraza | CX, CXL | 6 Cyl 3.9 L FLEX, 6 Cyl 3.9 L GAS
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Buick Terraza Oxygen Sensor Part Number: 12597878
$51.58 MSRP: $104.78
You Save: $53.20 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005-2006 Buick Terraza | CX, CXL | 6 Cyl 3.5 L GAS

Buick Terraza Oxygen Sensor

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Since the Buick Terraza, oxygen sensor is a critical part that emphasizes the strength of this luxurious minivan, which the Buick Company launched in the market in 2005. This Oxygen Sensor is very essential in measuring the air/fuel mixture in the engine exhaust to optimize performance and; at the same time minimizing emissions. In each Buick Terraza, there are two Oxygen Sensors: the pre-CAT Oxygen Sensor and the post-CAT Oxygen Sensor; the pre-System adjusts the pulse width of the fuel injector to improve the vehicle's fuel consumption rate and overall driveability. The adaptation of the Buick Terraza makes it even more popular, and as such, it is good to note that regardless of the category, the Oxygen Sensor is available to enhance drivers' joy on the road. Since the Buick Terraza is a seven passenger vehicle, proper functioning of Oxygen Sensor ensures the vehicle's performance does not pose a risk to the environment as it adheres to emission standards. As a special feature, it must be mentioned that the Oxygen Sensor works properly even at high temperatures, but, nevertheless, it may be necessary eventually to change it because of the contamination. The Buick Terraza has its niche in automotive market because of its built-in design and comfort in addition to offering security that accredited it technicalities like side airbags and antilock brakes. All in all, it can be said that Buick Terraza Oxygen Sensor is very important in the vehicle's operation, fuel consumption and safety, strengthening once more the Buick Terraza position as one of the best luxury minivan automobile models.

Buick Terraza Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
12594452
Q: How to replace the Heated Oxygen Sensor 2 on Buick Terraza?
A:
The J 39194-B Heated Oxygen Sensor Wrench (J 39194-B) must be used to remove the Heated Oxygen Sensor 2 while maintaining the integrity of both sensor's pigtail connections since removal may damage operational functionality. The oxygen sensor requires careful handling to prevent drops while preserving both the in-line electrical connector and louvered end free from contaminants and dirt and grease. The sensor and vehicle harness connectors should never receive contact cleaner or similar materials. Additionally maintain safe conditions around the sensor pigtail and harness wires to prevent damage. Managing the lead wires by avoiding bends and keeping the oxygen sensor ground wire in position will maintain your engine performance. The vehicle harness connector peripheral seal must stay intact to stop water infiltration while you use Packard's Crimp and Splice Seals Terminal Repair Kit for fixes instead of soldering. Secure removal of the heated oxygen sensor requires engine temperatures at or above 48°C (120°F) to avoid breaking the thread connection. Turn OFF the ignition followed by vehicle lift then disconnect the sensor harness connector. Using the J 39194-B back out the heated oxygen sensor. Special thread protection comes in the form of anti-seize compound GM P/N 5613695 or its equivalent which must be applied to the heated oxygen sensor threads during installation. Embed the HO2S 2 sensor and apply 41 N.m (30 lb ft) torque while connecting its electrical connector and returning the vehicle to the ground.