Ok I have a 99 Silverado 2500 2wd with a 6.0 Its white. By the way its automatic 4l80e and has a small alt. Would like to know the wire route of 02 sensor 2 bank 2. From sensor back to ecm. If your just going to correct my terms **** off I had enough of ya. I probed the sensor with a O- scope and its functioning but not getting back to ecm. I hook the Autel ms906bt to data link and there is no signal pulse from sensor. Haven't been able to trace the wire route to check for rubbing. Don't have a lift so have to lay on back. The pins and connectors on ecm are in great shape. Thought maybe there was problem there so inspected. I don't expect any real help from this site as haven't had any up to date so far let alone most of the other posters questions. PROVE ME WRONG!!!!!

 

sure. I'll try it. If you smart *** my answer...**** off.
its pretty hard to find a open in wiring bundle of a harness, especially if there is no intermediate connector in the harness. So even knowing where the harness r uns... you may not be able to see a fault.
professionals do this:
they verify the wire continuity from the pcm to the 02 sensor connector....either by ohm meter or running power thru the disconnected harness. ie 12volts to power a bulb or test light.
if the wire is open...run new wires. wrap the new wires in a loom. splice them in at the pcm and 02 sensor connector.

if you have an intermediate connector....disconnect it and do the continuity test at that point. This divides the circuit in half and will allow a quicker and shorter replacement wiring repair.

 

I held off, and looked at your post's, mostly from December 19, most of your replies where answering your own questions, good, in two points, first you fixed it, second you posted the fix to this bulletin board. When people don't respond, means they don't have an answer, or those that don't have the answer that post are wrong. I don't get an attitude when I don't get a reply.