C 1500 Yukon 2WD V8-5.3L VIN Z Flex Fuel (2003)
3. If equipped with a 6.0L engine, connect the HO2S electrical connector.
4. If equipped with a 4.8L or 5.3L engine, connect the HO2S electrical connector.
5. Install the HO2S to the clips
6. Disconnect the CPA retainer.
7. Lower the vehicle.