There about 3 to 4 inches long with an electric wire on the end of them and they are screewed into the exhaust pipes. Start looking were the exhaust bolts to the engine on both sides and work your way back to the muffler and you will find THEM.
No, they will need replaced if defective.
A 1998 Chevy S10 Blazer has a total of two oxygen sensors. One is used for the upstream and one for the downstream.
how many oxygen cencors does the 1994 Chevy blazer have
They are all threaded into the exhaust system at various points.
TWO.
three
yes, it does have Oxygen sensors
How many oxygen sensors are there for a 2001 Chevy Tahoe 5.3L
If it is equipped with air bags of course it has sensors.
there are 3 O2 sensors on the 4.3 Vortec V6 Blazer ( I have a 99 as well) 1 is on each exhaust downpipe forward of the catalytic converter, the 3rd is just aft of the converter.
There are approximately 2 oxygen sensors on a 2005 Chevrolet Astro van. The oxygen sensors can be purchased at stores such as NAPA.
In back of engine, it can be reached from the top.