How to Replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on 2004 Chevrolet Blazer?

The replacement of Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 begins with vehicle elevation. First disconnect the HO2S's connector then use the Oxygen Sensor Wrench Tool (J 39194-B) to remove the sensor (HO2S). New and service replacement sensor threads should receive protection by a layer of anti-seize compound GM P/N 5613695 when necessary. This compound contains liquid graphite and glass beads. You must install the sensor using the Oxygen Sensor Wrench (J 39194-B), reaching a torque level of 42 N.m (31 lb ft). Finish the repair by attaching the HO2S harness connector then drop the vehicle back to the floor.

OEM 2004 Chevrolet Blazer Oxygen Sensor

Oxygen O2 Sensor

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2004 Chevrolet Blazer Oxygen Sensor
Part Number: 12567254
$54.77 MSRP: $111.24
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Item Weight: 0.50 Pounds
- Item Dimensions: 8.3 x 3.3 x 3.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12567254
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2004 Chevrolet Blazer Submodels:
- Base, LS, Xtreme, ZR2 | 6 Cyl 4.3 L GAS

2004 Chevrolet Blazer Oxygen Sensor

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2004 Chevrolet Blazer Parts Questions & Experts Answers

Q: How to Replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on 2004 Chevrolet Blazer?
A: The replacement of Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 begins with vehicle elevation. First disconnect the HO2S's connector then use the Oxygen Sensor Wrench Tool (J 39194-B) to remove the sensor (HO2S). New and service replacement sensor threads should receive protection by a layer of anti-seize compound GM P/N 5613695 when necessary. This compound contains liquid graphite and glass beads. You must install the sensor using the Oxygen Sensor Wrench (J 39194-B), reaching a torque level of 42 N.m (31 lb ft). Finish the repair by attaching the HO2S harness connector then drop the vehicle back to the floor.

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2003 Chevrolet Blazer Oxygen Sensor 2005 Chevrolet Blazer Oxygen Sensor