Dazed and Confused
Join Date: May 2012
Location: Upstate New York
Re: 02 sensor
There's not much to the heater side of the sensor. It receives 12VDC to start the heater and it's grounded to the distribution ground. I've attached a video for trouble shooting, but checking continuity across the heater should tell you enough.
Ever notice that there's so many high performance parts available for GM products?
Did you ever think that maybe they NEED them?