02-21-2024, 03:59 PM
If I recall correctly (and these days thats a BIG if), I was able to read temperature differentials with my cheapo OBDII reader and eliminate almost all other posibilities. It's easier than it sounds. I know because I was able to do it LOL. Parts replacers have to use every diagnostic trick we are afforded. Start googeling and you will quickly discover what I mean.
Also I think the "banks" may refer to upstream and downstream. I think you are dealing with the upstream (bank 1) O2 sensor which is easy on a chevy to get to - right on top. Very easy. The downstream (bank 2?) one is at the catyletic converter and thankfully I did not need to replace that one. You will need to order a special little socket ($10) or get creative to remove and replace the sensor due to the cable that comes out of it.
Hopefully Hilo Julie is right and a hard reset wins the day. Good luck with it.
Also I think the "banks" may refer to upstream and downstream. I think you are dealing with the upstream (bank 1) O2 sensor which is easy on a chevy to get to - right on top. Very easy. The downstream (bank 2?) one is at the catyletic converter and thankfully I did not need to replace that one. You will need to order a special little socket ($10) or get creative to remove and replace the sensor due to the cable that comes out of it.
Hopefully Hilo Julie is right and a hard reset wins the day. Good luck with it.