How to replace o2 sensor

Need instructions on how to replace the o2 sensor in the engine compartment.
99GA SE V6 3400
Thanks

You just unclip the harness and use a open end/box style wrench or special O2 wrench they sell at places like autozone or pepboys and un bolt it from the exhaust manifold and install the new one. Not too hard to do but might be a little cramped. Good Luck

John

Just make sure you use anti-seize on the threads in case you ever need to change it again this will make it a lot easier.

Good point GTP but most New AC Delco and Bosch come with anti Seize already on them. I just changed mine and it had been there already.