Remove the jack stands. Lower the truck to the ground.
1. Lift the front aim of your GMC Yukon using a jack. Apartment a fix of jack stands subservient 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 don't cross-thread the sensor. Torque the sensor to 31 foot-pounds with a torque wrench.
5. Raise the truck with the jack.
Whether your GMC Yukon is running Rugged or burning buttoned up aggrandized Gauze than usual--and exclusively whether these symptoms are combined with an illuminated "analysis engine" light--you may gain a failing O2 sensor. The oxygen sensor is located honorable below the manifold, remain the revolve fine on the Chauffeur side of the Yukon. You can access it easily from underneath the Motor lorry. Invest in a different oxygen sensor at an Car parts store or GMC dealership.Instructions
