Conversions & Hybrids - Which O2 Sensor for a 2002 6.0 Truck Motor?

The 6.0 Engine is from a 2002 Youkon Denali. It came with the harness and the ECM. The ECM # is 12200411

The problem is the butcher who removed the harness chopped off the whole transmission section so the O2 sensor plugs are missing.

I went to the GMC dealer and they said it could be one of 2 connectors. Can anyone point me in the direction of an O2 sensor that will work with the PCM? From there I can back into which connector pigtails I'll order.

Thanks, Ken

4 wire Black square or 4 wire black flat are the most common for the 411.

Jon
PSI

Either connector style o2 sensor will work they both put out the same voltage range. IIRC the flat vs square connector style difference depends on which plant that truck was built in but I can` remember which plant used the flat connector and which was the square.

Yes, the dealer did mention it could be flat or square depending on where it was built. I'll go with the square black ones.

Any recommendation on which part number O2 I should use?

"Any recommendation on which part number O2 I should use?"

Regardless, I'd check $$ B4 I got hammered at the dlr.