How to Replace a Heated Oxygen Sensor 2 on Chevrolet Trailblazer?

Vehicle support and elevation are necessary before commencing Heated Oxygen Sensor 2 replacement. The heated oxygen sensor (HO2S) electrical connector needs removal from the engine wiring harness electrical connector. After using Heated Oxygen Sensor Wrench (J 39194-B) to remove the HO2S the operation is complete. The threads of the sensor require application of the anti-seize compound (P/N 12377953) or equivalent material which functions as a special anti-seize mixture made from liquid graphite and glass beads to ease sensor removal. Tighten the HO2S with the Heated Oxygen Sensor Wrench (J 39194-B) to 42 N.m (31 lb ft) if necessary. Install the HO2S electrical connector onto the engine wiring harness electrical connector before lowering the vehicle.

OEM Chevrolet Trailblazer Oxygen Sensor

Oxygen O2 Sensor

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18 Oxygen Sensors found

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Chevrolet Trailblazer Oxygen Sensor
Part Number: 12573721
$62.49 MSRP: $126.94
You Save: $64.45 (51%)
Ships in 1-2 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:
- 2004 Chevrolet Trailblazer | LS, LT, North Face | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 12590749
$47.03 MSRP: $95.51
You Save: $48.48 (51%)
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Front Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Trailblazer | Base, LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Trailblazer | Base, LS, LT | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 19209808
$72.40 MSRP: $147.04
You Save: $74.64 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; 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:
- 2006 Chevrolet Trailblazer | LS, LT | 8 Cyl 5.3 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | Base, LT | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Rear Oxygen Sensor
Part Number: 12604538
$99.55 MSRP: $186.94
You Save: $87.39 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007 Chevrolet Trailblazer | LS, LT | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 12586996
$92.04 MSRP: $186.94
You Save: $94.90 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 Chevrolet Trailblazer | LS, LT | 6 Cyl 4.2 L GAS
View related parts
Chevrolet Trailblazer Oxygen Sensor
Part Number: 12585999
$92.04 MSRP: $186.94
You Save: $94.90 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | LS, LT | 6 Cyl 4.2 L GAS
View related parts
Chevrolet Trailblazer Oxygen Sensor
Part Number: 12578624
$92.04 MSRP: $186.94
You Save: $94.90 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor; Front Oxygen Sensor
- Replaces: 24577303
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 Chevrolet Trailblazer | LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 12577588
$66.10 MSRP: $124.16
You Save: $58.06 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Replaces: 24577273
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2003 Chevrolet Trailblazer | LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 25203197
$32.97 MSRP: $51.65
You Save: $18.68 (37%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Lower Oxygen Sensor
- Replaces: 55503721
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 12695629
$49.37 MSRP: $77.34
You Save: $27.97 (37%)
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Pre-Catalyst Bank 1 Se; Upper Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.3 L GAS
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Chevrolet Trailblazer Oxygen Sensor
Part Number: 55506886
$61.66 MSRP: $110.10
You Save: $48.44 (44%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Pre-Catalyst Bank 1 Se; Upper Oxygen Sensor; Sensor, Computer Control Sensors
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | L, LS, LT | 3 Cyl 1.2 L GAS
View related parts
Chevrolet Trailblazer Oxygen Sensor
Part Number: 19209805
$85.68 MSRP: $174.02
You Save: $88.34 (51%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12581346, 12590750, 19256730, 19210712
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
Chevrolet Trailblazer Oxygen Sensor
Part Number: 12681390
$39.78 MSRP: $74.70
You Save: $34.92 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Lower Oxygen Sensor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, LS, LT, RS | 3 Cyl 1.3 L GAS
View related parts
Chevrolet Trailblazer Oxygen Sensor
Part Number: 19209816
Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
- Replaces: 12611870, 12600893
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Chevrolet Trailblazer | LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | Base, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
View related parts
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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | Base, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS

Chevrolet Trailblazer Oxygen Sensor

Our website offers an extensive catalog of genuine Chevrolet Trailblazer Oxygen Sensor at unbeatable prices. Every OEM Chevrolet Trailblazer Oxygen Sensor comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Trailblazer Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
12604575
Q: How to Replace a Heated Oxygen Sensor 2 on Chevrolet Trailblazer?
A: Vehicle support and elevation are necessary before commencing Heated Oxygen Sensor 2 replacement. The heated oxygen sensor (HO2S) electrical connector needs removal from the engine wiring harness electrical connector. After using Heated Oxygen Sensor Wrench (J 39194-B) to remove the HO2S the operation is complete. The threads of the sensor require application of the anti-seize compound (P/N 12377953) or equivalent material which functions as a special anti-seize mixture made from liquid graphite and glass beads to ease sensor removal. Tighten the HO2S with the Heated Oxygen Sensor Wrench (J 39194-B) to 42 N.m (31 lb ft) if necessary. Install the HO2S electrical connector onto the engine wiring harness electrical connector before lowering the vehicle.

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