Bank 1 sensor 2, O2 sensor
 

Can someone confirm that this is the post cat. convertor sensor. 95 LT 4x4, 4.3 vortec engine.

Thanks
Mike

Depends on what system you have and how many sensors you have.

You will have one upstream sensor (B1S1). You could potentially have two down stream sensors. If you have three O2 sensors total, then B1S2 would be the pre-cat sensor and B1S3 would be the post-cat sensor. If you only have two O2 sensors total, then B1S2 would be the post-cat sensor. Just take a look at your exhaust system and count the O2 sensors between the exhaust manifolds and the muffler.

Thanks

I just checked and it only has 2 sensors. I always thought it had three but I only can find two.

Mike