How to Replace a Heated Oxygen Sensor on GMC Envoy?

To replace Heated Oxygen Sensor 1, one first removes connector position assurance (CPA) retainer from the heated oxygen sensor (HO2S) connection then disconnect the engine wiring harness electrical connector from the HO2S electrical connector. Next, pull off the HO2S electrical connector clip from the transmission fluid fill tube bracket. If necessary, remove the HO2S using the J 39194-B Heated Oxygen Sensor Wrench (J 39194-B). During the installation, clean the threads of the old sensor in case it is going to be reused and apply anti-seize compound (P/N 12377953), which is actually composed of liquid graphite and glass beads that make removal easier. Mount the HO2S according to the J 39194-B (J 39194-B) and tighten it to 42 N.m (31 lb ft). Reconnect the engine wiring harness electrical connector to the HO2S electrical connector, connect the HO2S electrical connector clip to the transmission fluid fill tube bracket, and lastly, the CPA retainer is fitted to the HO2S connection.

OEM GMC Envoy Oxygen Sensor

Oxygen O2 Sensor

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15 Oxygen Sensors found

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GMC Envoy Oxygen Sensor Part Number: 12573721
$63.75 MSRP: $129.48
You Save: $65.73 (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 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12592591
$39.35 MSRP: $79.91
You Save: $40.56 (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:
- 2006-2009 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy 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:
- 2005-2006 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12604575
$93.88 MSRP: $190.68
You Save: $96.80 (51%)
Ships in 1-3 Business Days
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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 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Rear Oxygen Sensor Part Number: 12604538
$100.18 MSRP: $186.94
You Save: $86.76 (47%)
Ships in 1-2 Business Days
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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 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12586996
$84.49 MSRP: $171.60
You Save: $87.11 (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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2005 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12585999
$93.88 MSRP: $190.68
You Save: $96.80 (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 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12578624
$84.49 MSRP: $171.60
You Save: $87.11 (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: 24577303
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2005 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12577588
$39.80 MSRP: $124.16
You Save: $84.36 (68%)
Ships in 1-2 Business Days
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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 GMC Envoy | SLE, SLT | 6 Cyl 4.2 L GAS
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GMC Envoy 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 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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GMC Envoy Oxygen Sensor Part Number: 12573167
$54.84 MSRP: $102.98
You Save: $48.14 (47%)
Ships in 1-2 Business Days
ADD TO CART
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:
- 2005 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
View related parts
GMC Envoy 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 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS
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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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 GMC Envoy | Denali | 8 Cyl 5.3 L GAS

GMC Envoy Oxygen Sensor

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The Oxygen Sensor in GMC Envoy vehicles helps in determining the amount of air and fuel mixture that is perfect for the vehicle engine exhaust for efficient running the vehicle and also to minimize emission. Through comparing the concentration of oxygen in exhaust with that of the surrounding environment, such as air, it produces a voltage-signal that reflects the condition of the mixture as either rich or lean. This feedback enables the engine control computer to vary the fueling signal to the fuel injectors appropriately so that maximum catalytic converter activity and least emissions are maintained. The GMC Envoy automobiles generally have a minimum of 2 oxygen sensors, the prior to the catalytic converter one and the following one, to the catalytic converter where the upstream oxygen sensor is the main feedback giving tool. The high temperature sensor has the drawback of degradating with age by contamination and thus leads to high emissions and low fuel consumption. In some newly manufactured cars, it is difficult to obtain an air / fuel ratio sensor rather than an oxygen sensor as the latter has a broader range of air / fuel measurement mixture.

GMC Envoy Oxygen Sensor Parts Questions & Experts Answers

Oxygen Sensor
12592591
Q: How to Replace a Heated Oxygen Sensor on GMC Envoy?
A:
To replace Heated Oxygen Sensor 1, one first removes connector position assurance (CPA) retainer from the heated oxygen sensor (HO2S) connection then disconnect the engine wiring harness electrical connector from the HO2S electrical connector. Next, pull off the HO2S electrical connector clip from the transmission fluid fill tube bracket. If necessary, remove the HO2S using the J 39194-B Heated Oxygen Sensor Wrench (J 39194-B). During the installation, clean the threads of the old sensor in case it is going to be reused and apply anti-seize compound (P/N 12377953), which is actually composed of liquid graphite and glass beads that make removal easier. Mount the HO2S according to the J 39194-B (J 39194-B) and tighten it to 42 N.m (31 lb ft). Reconnect the engine wiring harness electrical connector to the HO2S electrical connector, connect the HO2S electrical connector clip to the transmission fluid fill tube bracket, and lastly, the CPA retainer is fitted to the HO2S connection.