what r the life span of a o2 sensor on a 01 suburban?

Answer 1

Which 1? You have 4. You have 2 in front of the converter (engine control) & 2 behind it (catalyst monitoring).

Answer 2

that is a trick question depending on too many variables. how do you drive, when do you drive, where the originals made on a Monday or a Wednesday, (Monday parts suck from what i have been told.) do you use the good gas or the cheap stuff, do you drive in town, or are you a freeway driver, too many variables.