Notes: 5.3 Liter;6.0 Liter; All Models; 5.3l; Rear; Left;All Models; 6.0l; Rear; Left
Location: Driver Side
Other Names: Oxygen Sensor, Rear Oxygen Sensor
Item Dimensions: 7.2 x 2.1 x 2.0 inches
Item Weight: 0.70 Pounds
Fitment Type: Direct Replacement
Part Description: 2008 Chevrolet Trailblazer Sensor Asm-Heated Oxygen (Position 3)
More Info
Vehicle Fitment
2008 Chevrolet Trailblazer | Base, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
FAQ for Oxygen Sensor Repair
Q: What may cause oxygen sensor contamination?
A:
Contamination of the oxygen sensor can result from the use of an inappropriate RTV sealant (not oxygen sensor safe) or excessive engine coolant or oil consumption. You should eliminate the source of contamination before replacing the oxygen sensor.
By Bob
GM Specialist
02/11/2022
Q: What should you do when replacing the HO2S?
A:
First, you should clear a code with a scan tool, regardless of whether or not a DTC is set. Next, you should reset the HO2S heater resistance learned to value.
By Bob
GM Specialist
02/11/2022
Q: What is the recommended torque for the HO2S?
A:
The recommended torque is 42 N.m (31 LB-FT).
By Bob
GM Specialist
02/11/2022
Q: How to install the Heated Oxygen Sensor-Bank 2 Sensor 2?
A:
First, you should connect the HO2S electrical connector and install the CPA retainer. In addition, you should coat the threads with anti-seize compound GM P/N 12377953, or equivalent. Finally, the HO2S should also be installed.
By Bob
GM Specialist
02/11/2022
Q: What should be noted when servicing the Oxygen Sensor?
A:
You should be careful not to use cleaning solvents on the sensor. In addition, you should keep the electrical connector and the exhaust inlet end free of contaminants.
By Bob
GM Specialist
02/11/2022
Q: How to install the Heated Oxygen Sensor-Bank 1 Sensor 1?
A:
First, you should connect the HO2S electrical connector and install the CPA retainer. In addition, you should coat the threads with anti-seize compound GM P/N 12377953, or equivalent. Finally, the HO2S should also be installed.
By Bob
GM Specialist
02/11/2022
Q: How to remove the Heated Oxygen Sensor-Bank 1 Sensor 2?
A:
You should remove the connector position assurance (CPA) retainer and disconnect the HO2S electrical connector. In addition, the HO2S should also be removed.
By Bob
GM Specialist
02/11/2022
Q: What are the guidelines for servicing Heated Oxygen and Oxygen Sensor?
A:
You should take care not to apply contact cleaners or other materials to the sensor or vehicle harness connectors and not damage the sensor pigtail and harness wires in such a way that the wires inside are exposed.
By Bob
GM Specialist
02/11/2022
Q: How to remove the Heated Oxygen Sensor-Bank 2 Sensor 2?
A:
You should remove the connector position assurance (CPA) retainer and disconnect the HO2S electrical connector. In addition, the HO2S should also be removed.
By Bob
GM Specialist
02/11/2022
Q: What should be noted when removing the Oxygen Sensor?
A:
You should be careful not to use excessive force when removing the sensor as it may damage threads in the exhaust manifold or the exhaust pipe.
By Bob
GM Specialist
02/11/2022
See more FAQs (12)
FAQ for Other Repair Info
Q: How to install the Engine Oil and Oil Filter?
A:
First, you should install the new Oil Filter, remove the oil drain pan, and fill the crankcase. Next, you should install the oil level indicator into the oil level indicator tube and check for oil leaks. Finally, you should install the intake manifold sight shield and close the hood.
Q: How to remove the Valve Rocker Arm and Push Rod?
A:
You should remove the valve rocker arm cover, the valve rocker arms, the valve rocker arm pivot support, and the Pushrods. Next, you should clean and inspect the valve rocker arms and pushrods.
Q: What should be noted when removing the Radiator Cap?
A:
You should be careful not to remove the Radiator Cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if the radiator cap or surge tank cap is removed while the engine and radiator are still hot.