Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 166 (ENGINE CONTROLS - 3.5L (L66) INTRODUCTION)REPAIR INSTRUCTIONSHEATED OXYGEN SENSOR (HO2S) BANK 2 SENSOR 2 REPLACEMENTREMOVAL PROCEDURE
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Removal Procedure
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Removal Procedure
WARNING: This page is about a different car, the 2005 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Turn the ignition OFF.
- Disconnect the bank 2 heated oxygen sensor 2 harness connector (2) and disconnect from the retaining bracket.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
- Remove the left transmission mount just enough to gain access to the heated oxygen sensor. Refer to Automatic Transmission Mount Replacement - Rear in Automatic Transmission.
- Remove the heated oxygen sensor wiring harness bracket and bolt.
IMPORTANT:
Bank 2 are cylinders 2, 4, and 6 which are closest to the front of the vehicle.
CAUTION:
Removal of the sensor is easier if the exhaust system is warmed up slightly. Be careful that it is not too hot to work on safely. Applying penetrating oil to the threads while moving the sensor back and forth will also aid in removal and will decrease the chance of exhaust pipe thread damage.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.