O2 sensors for 2000 Saturn LS2

How many O2 sensors does my car have and where are they?

i *think* four - one in each exhaust manifold, one behind each cat.convertior.

may i ask why you are looking?

my "check engine light" is on and after renting a scanner, the diagnosis is the o2 sensors need to be replaced. every auto parts store seems to have different options on how many sensors they are and what the replacement part is. I ended up calling the dealership directly and they provided me with the info I needed. The part was cheaper than from an auto store!

good, i was going to say call the dealership, parts stores will read the code for you, but rarely have any diagnostic skills other then saying "replace that part, we have one in stock"