How to replace the Heated Oxygen Sensor (HO2S) on 2009 GMC Envoy?

First step to replace the Heated Oxygen Sensor (HO2S) requires removal of the connector position assurance (CPA) retainer from HO2S connection along with disconnecting the engine wiring harness electrical connector from HO2S electrical connector. Before proceeding to the second step you must remove the HO2S electrical connector clip which is located at the transmission fluid fill tube bracket. Remove the HO2S through the J 39194-B if needed. The threads of an existing sensor require P/N 12377953 anti-seize compound if reinstallation occurs because this compound helps with later extraction. The J 39194-B should be used to install the HO2S and the torque should be set to 42 Nm (31 lb ft). The installation process begins by mending the engine wiring harness electrical connector to the HO2S electrical connector and finishing with the CPA retainer installation to the HO2S connection.

OEM 2009 GMC Envoy Oxygen Sensor

Oxygen O2 Sensor

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5 Oxygen Sensors found

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2009 GMC Envoy Oxygen Sensor
Part Number: 12592591
$39.35 MSRP: $79.91
You Save: $40.56 (51%)
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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.
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Fits the following 2009 GMC Envoy Submodels:
- SLE, SLT | 6 Cyl 4.2 L GAS
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2009 GMC Envoy Oxygen Sensor
Part Number: 12604575
$92.04 MSRP: $186.94
You Save: $94.90 (51%)
Ships in 1-3 Business Days
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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.
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Fits the following 2009 GMC Envoy Submodels:
- SLE, SLT | 6 Cyl 4.2 L GAS
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2009 GMC Envoy 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
- 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.
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Fits the following 2009 GMC Envoy Submodels:
- Denali | 8 Cyl 5.3 L GAS
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2009 GMC Envoy 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 GMC Envoy Submodels:
- Denali | 8 Cyl 5.3 L GAS
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2009 GMC Envoy 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 GMC Envoy Submodels:
- Denali | 8 Cyl 5.3 L GAS

2009 GMC Envoy Oxygen Sensor

With a comprehensive array of OEM 2009 GMC Envoy Oxygen Sensor, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2009 GMC Envoy 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 GMC Envoy Parts Questions & Experts Answers

Q: How to replace the Heated Oxygen Sensor (HO2S) on 2009 GMC Envoy?
A: First step to replace the Heated Oxygen Sensor (HO2S) requires removal of the connector position assurance (CPA) retainer from HO2S connection along with disconnecting the engine wiring harness electrical connector from HO2S electrical connector. Before proceeding to the second step you must remove the HO2S electrical connector clip which is located at the transmission fluid fill tube bracket. Remove the HO2S through the J 39194-B if needed. The threads of an existing sensor require P/N 12377953 anti-seize compound if reinstallation occurs because this compound helps with later extraction. The J 39194-B should be used to install the HO2S and the torque should be set to 42 Nm (31 lb ft). The installation process begins by mending the engine wiring harness electrical connector to the HO2S electrical connector and finishing with the CPA retainer installation to the HO2S connection.