How to replace the Heated Oxygen Sensor (HO2S) Sensor 2 on 2009 Chevrolet Trailblazer?

Start the replacement process of Heated Oxygen Sensor (HO2S) Sensor 2 by elevating and supporting the automobile. The engineer must disconnect the HO2S electrical connector attached to the engine wiring harness. The J 39194-B tool needs to be used for HO2S removal. Apply anti-seize compound P/N 12377953 or an equivalent to the threads of the old sensor because this substance composed of liquid graphite and glass beads will make future removal easier. The J 39194-B tool should be used for installing the HO2S if required with proper torque set to 42 Nm (31 lb ft). Reconnect the HO2S electrical connector to the engine wiring harness while performing the final operation of lowering the vehicle.

OEM 2009 Chevrolet Trailblazer Oxygen Sensor

Oxygen O2 Sensor

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

5 Oxygen Sensors found

View related parts
2009 Chevrolet Trailblazer Oxygen Sensor
Part Number: 12592591
$39.35 MSRP: $79.91
You Save: $40.56 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.2 x 3.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12592591
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Chevrolet Trailblazer Submodels:
- Base, LS, LT | 6 Cyl 4.2 L GAS
View related parts
2009 Chevrolet Trailblazer Oxygen Sensor
Part Number: 12604575
$92.04 MSRP: $186.94
You Save: $94.90 (51%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.1 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12604575
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Chevrolet Trailblazer Submodels:
- Base, LT | 6 Cyl 4.2 L GAS
View related parts
2009 Chevrolet Trailblazer Oxygen Sensor
Part Number: 12590749
$47.03 MSRP: $95.51
You Save: $48.48 (51%)
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.4 x 3.0 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- Require Quantity: 2
- SKU: 12590749
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Chevrolet Trailblazer Submodels:
- Base, LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
2009 Chevrolet Trailblazer Oxygen Sensor, Passenger Side
Part Number: 12609477
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 3); Rear Oxygen Sensor; Sensor, Computer Control Sensors
- Position: Passenger Side
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.2 x 3.1 x 3.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12609477
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Chevrolet Trailblazer Submodels:
- Base, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
2009 Chevrolet Trailblazer Oxygen Sensor, Driver Side
Part Number: 12612506
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 3); Rear Oxygen Sensor; Sensor, Computer Control Sensors
- Position: Driver Side
- Item Weight: 0.50 Pounds
- Item Dimensions: 7.3 x 2.1 x 2.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12612506
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2009 Chevrolet Trailblazer Submodels:
- Base, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS

2009 Chevrolet Trailblazer Oxygen Sensor

With a comprehensive array of OEM 2009 Chevrolet Trailblazer Oxygen Sensor, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2009 Chevrolet Trailblazer Oxygen Sensor are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2009 Chevrolet Trailblazer Parts Questions & Experts Answers

Q: How to replace the Heated Oxygen Sensor (HO2S) Sensor 2 on 2009 Chevrolet Trailblazer?
A: Start the replacement process of Heated Oxygen Sensor (HO2S) Sensor 2 by elevating and supporting the automobile. The engineer must disconnect the HO2S electrical connector attached to the engine wiring harness. The J 39194-B tool needs to be used for HO2S removal. Apply anti-seize compound P/N 12377953 or an equivalent to the threads of the old sensor because this substance composed of liquid graphite and glass beads will make future removal easier. The J 39194-B tool should be used for installing the HO2S if required with proper torque set to 42 Nm (31 lb ft). Reconnect the HO2S electrical connector to the engine wiring harness while performing the final operation of lowering the vehicle.