2002 silverado o2 sensor question
 

hello, i have a 2002 chevrolet z71 with a 5.3 and service engine soon light came on so i took it to auto zone and they read the code for me. turns outthe one of the o2 sensors went out. i was wondering which sensor was bank 2 sensor #2

RE: 2002 silverado o2 sensor question
 

bank 2 is right...sensor 2 is rear.

the guys at autozone didn't know that?

RE: 2002 silverado o2 sensor question
 

Ha ha! Not suprised. When I worked at Advance Auto, there was only two people who knew how to run the scanner, let alone what the codes meant.

RE: 2002 silverado o2 sensor question
 

Change all of them. It's time. If you still get a light. It is possible you have a bad Cat.
Not uncommon for 2002/ 2003

RE: 2002 silverado o2 sensor question
 

Can someone say, "turn those things off"?...