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How to Replace the Oxygen Sensor on a GMC Yukon

If your GMC Yukon is running rough or burning through more gas than usual--and especially if these symptoms are combined with an illuminated "check engine" light--you may have a failing oxygen sensor. The oxygen sensor is located just below the manifold, behind the wheel well on the driver side of the Yukon. You can access it easily from beneath the truck. Purchase a new oxygen sensor at an auto parts store or GMC dealership.

Instructions

1

Raise the front end of your GMC Yukon using a jack. Place a set of jack stands beneath the front of the truck to secure it. Remove the jack.

2

Remove the retaining clip from the wiring harness connected to the oxygen sensor by pulling it up to release it. Remove the wiring harness from the sensor. The GMC Yukon uses a wiring harness that pulls free by hand, so carefully pull it upward away from the sensor.

3

Remove the oxygen sensor using an oxygen sensor socket and ratchet. Check the thread area on the truck and wipe it with a clean rag if needed to clear any debris.

4

Insert the new oxygen sensor using the oxygen sensor socket and ratchet. It may be easier to thread it in by hand so that you dont cross-thread the sensor. Torque the sensor to 31 foot-pounds with a torque wrench.

5

Raise the truck with the jack. Remove the jack stands. Lower the truck to the ground.

Posted by Unknown at 5:45 AM

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