That vehicle has several O2 sensors and they are all threaded into the exhaust system at various points.
Either a O2 socket & ratchet or a 22mm wrench. Best find out which sensor first as you could spend lots of money guessing
In the manifold or the exhaust pipes
Code 45---Rich exhaust--- Check the evaporative charcoal canister and its components for the presence of fuel
where is the O2 sensor on a 2002 chevy trailblazer
where is the o2 sensor located on a 1992 Chevy s-10 4.3 ?
o2 sensor
screwed into the exhaust pipe, under the vehicle, close to the exhaust manifold
The 2002 Chevy Cavalier 02 sensor can be found attached to the air cleaner housing. The O2 sensor will be on the back side of the air cleaner housing.
Ain't no fixing an O2 sensor. If there is a problem with it, replace it with a new one.
location of 3 sensor of 97 Chevy astro van?
to change o2 sensor ,you need to buy a o2 sensor socket from a parts store then disconnect neg terminal on battery ,after that disconnect wire connecter on o2 sensor and remome o2 sensor