Thay are screewed into the exhaust system / Exhaust pipes. They are about 4 inches long with an electrical connector hooked to them. There should be 4 on that truck.
There will not be any after the muffler.
Depending on which engine you have, there are several O2 sensors on the vehicle and they are all threaded into the exhaust at various points.
where is the O2 sensor on a 2002 chevy trailblazer
where is the o2 sensor located on a 1992 Chevy s-10 4.3 ?
Bank 1, on a 4.3 L engine would be on the drivers side.
You have 2 O2 sensors on that vehicle. They are both threaded into the exhaust system, one before the catalytic converter and one after the catalytic converter. Bank 1 sensor 1 is the O2 sensor before the catalytic converter.
o2 sensor
There are several O2 sensors on that vehicle and they are all threaded into the exhaust system at various points.
How do you unplug an oxygen sensor on a 2003 Chevy Cavalier
The heated O2 sensor located on the exhaust header pipe directly after the exhaust manifold on the passenger side of the engine is probably bad, replace it.
Ain't no fixing an O2 sensor. If there is a problem with it, replace it with a new one.
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.
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