I have a 2001 Silverado 2500 with the 6.0L.
I have a service engine soon light come on. I had it read for me and I got the error O2 sensor heater malfunction sensor 1 bank 1.
Any ideas about this? A mechanic friend warned about just replacing the sensor. Said that was a bad idea because it could be a lot of things causing it.
I don't even know where the sensor is.
Looks like I am headed for a dealer...
Thanks