HOW TO REPLACE YOUR UP STREAM AND DOWN STREAM O2 SENSORS ON A 06 CADILLAC STS V6

Today I'm gonna show you how to remove and install upstream and downstream 02 is downstream 02 sensors on your 06 Cadillac STS ill tell you what caused it. and show you how remove some parts and panels to get access to the up steam O2 sensors. Sorry if I had already started working half way thru and then recorded.But please enjoy.