Yukon 2WD V8-5.3L (2007)
9. Remove the right rear HO2S electrical connector clip from the engine harness clip (4).
10. Remove the catalytic converter to exhaust manifold nuts (2).
11. Separate the catalytic converter from the exhaust manifold studs.
12. Slide the catalytic converter hanger (3) out from the hanger bracket.
13. If replacing the catalytic converter perform the following steps, otherwise proceed to step 4 in the installation procedure.
14. Remove the exhaust seal (1) as required.
15. Remove the HO2S's (2 and 3).
Installation Procedure
Important: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The graphite
tends to burn away, but the glass beads remain, making the sensor easier to remove. New, or service replacement sensors already have the
compound applied to the threads. If the sensor is removed from as exhaust component and if for any reason the sensor is to be reinstalled, the
threads must have anti-seize compound applied before the reinstallation.
