I picked up a 1500 2WD 2001 Quad Cab w/8'bed. So far the check eng light came on. AutoZone says it's Bank 1 Sensor 1 thats bad. Today I found the stock fog lights don't turn on. I pull the ****, the light on the dash lights up but no fog lights light. Also found the back passenger speaker doesn't work. I Took the truck to aneighborhood Stereo/Auto alarm place and had new speakers installed. He said, and showed me the magnet came off the one side. So I had him replace both. Now I am looking for a O2 sensor. Can someone tell me whichbrandis recommended? So far I found Denso, Bosh, Standard, Delphi, but no NGK I guess NGK stop making them.
Oh there has to be a relay for the fog lights anybody clue me in where that might be. I sure appreciateany input.
Thanks, Obie

 

I put Bosch in mine when I replaced them. Mostly because I could get a discount on them. So far no problems.

 

The NGKO2 sensors are now NTK brand.
Before you get to carried away with your fog light diagnosis. Check and make sure both bulbs aren't burnt out. Check the fuses too.
My fog lamp bulbs only last 1 1/2 years on average. Still both original headlights though!

 

NGK (now NTK) O2 sensors are really good quality. I would recommend those over the bosch if you can find somebody that carries them.

Relay for the fogs is under the hood in the black box (power distribution center) next to the battery. Turn the lid over for the diagram.