I remember Matt telling me something about gm using different color connectors on various years.
CK5
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I think the only difference is the keyway position. I think you can swap them if you have the old sensors I think?
Every harness I have put in was a crap shoot on which o2 it uses. I usually take a picture and head to the parts store.
I ordered the correct ones fro the truck. I looked at them for shape and prongs and the keyway. Keyway is on the top on one, bottom on the other.
Hmm, I wish I knew more about them.
Deon’s is from a 2016 and these are what he has.
Driver side
Passenger side
Driver side
Passenger side
If you aren’t running cats I would imagine you could use either or, with cats upstream usually measures air/fuel, downstream is cat efficiently right?
Compares the front and back for cat efficiency. Same units, different plugs. Look the same from the outside.
Yes I think you have to back that out of the ecm. Does it go into limp mode @Fastereddie ?
Yeah there’s a ton of stuff to do in the ecm if your not in a sniffer scenario
Not that he needs it ...... but if sniffer state like me . State computer goes in the obd II port and check that all emissions functions are in place . If not you fail and possible problems .
Free state of Tennessee. There are 4 counties who sniff tail pipes. None near me.
If you have an ecm pin out, you might want to double check he didn't delete the upstream O2s and leave the downstream by mistake. Shouldn't be hard to verify pin#, wire color, and check connectivity. Best case he just used the wrong connector, worst case you'll be moving pins on the ecm plug.
We got a guy at work that I’m pretty sure sniffs tailpipes
New harness. Not rebuilt.
Ok keep your personal life out of this
Nope. Up stream only with down stream connectors. No where on their web site does it say which sensors to use.
