How to replace the Heated Oxygen Sensor (HO2S) at Position 2 on Buick Terraza?

The J 39194-B Heated Oxygen Sensor Wrench (J 39194-B) supports both curved and threaded sensor removal and installation at position 2. Caring handling of the oxygen sensor requires attention because exposure to grease, dirt and cleaning solvents may negatively affect sensor functionality. Maintenance of the sensor operation requires that you do not separate the pigtail between HO2S and O2S. The oxygen sensor requires replacement because all three components of the pigtail wiring and connector and terminal display damage. The sensor wires along with vehicle leads must be maintained with a smooth curve and the oxygen sensor ground wire should not be detached because poor engine performance may occur. Every component of the vehicle harness connector should retain its proper sealing status to stop water entry while Packard's Crimp and Splice Seals Terminal Repair Kit serves as the preferred repair tool instead of traditional soldering methods. It is essential to wait until the engine temperature reaches 48°C (120°F) before starting heated oxygen sensor removal to protect the thread from damage. Start by shutting down the vehicle engine and elevating the car before removing the sensor harness connector. Use J 39194-B to reverse the heated oxygen sensor carefully. Apply anti-seize compound GM P/N 5613695 or its equivalent to the threads of the heated oxygen sensor before reinstalling because this special compound helps sensor removal in future procedures. Construct an installation of the HO2S 2 while applying a torque of 41 N.m (30 lb ft). After that attach the sensor electrical connector then lower the vehicle.

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%)
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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
$48.99 MSRP: $99.54
You Save: $50.55 (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 and Q&A

Oxygen Sensor
19209807
Q: How to replace the Heated Oxygen Sensor (HO2S) at Position 2 on Buick Terraza?
A:
The J 39194-B Heated Oxygen Sensor Wrench (J 39194-B) supports both curved and threaded sensor removal and installation at position 2. Caring handling of the oxygen sensor requires attention because exposure to grease, dirt and cleaning solvents may negatively affect sensor functionality. Maintenance of the sensor operation requires that you do not separate the pigtail between HO2S and O2S. The oxygen sensor requires replacement because all three components of the pigtail wiring and connector and terminal display damage. The sensor wires along with vehicle leads must be maintained with a smooth curve and the oxygen sensor ground wire should not be detached because poor engine performance may occur. Every component of the vehicle harness connector should retain its proper sealing status to stop water entry while Packard's Crimp and Splice Seals Terminal Repair Kit serves as the preferred repair tool instead of traditional soldering methods. It is essential to wait until the engine temperature reaches 48°C (120°F) before starting heated oxygen sensor removal to protect the thread from damage. Start by shutting down the vehicle engine and elevating the car before removing the sensor harness connector. Use J 39194-B to reverse the heated oxygen sensor carefully. Apply anti-seize compound GM P/N 5613695 or its equivalent to the threads of the heated oxygen sensor before reinstalling because this special compound helps sensor removal in future procedures. Construct an installation of the HO2S 2 while applying a torque of 41 N.m (30 lb ft). After that attach the sensor electrical connector then lower the vehicle.