mantycarguy

Hey Tuners out there. I have a few questions I hope you can answer. I am in the process of converting a 02 truck w/ 6.0 4l80e harness to run a 5.3 4l60e stand alone for a 66 caprice conversion. Looking at the pinouts on the truck harness I noticed the the heater cicuit for the front O2 is controlled by the pcm on both sides of the cicuit. These O2 connector are shaped like a trapezoid and both left and right sides have a green and light green wire for each which return back to the ecm red connector on pins 74 and 80 in my schematics. I have an ecm #0411 which should be correct for 4.8 to 6.0 litre engine applications. I also compared the 5.3 schematics from a 1500 series truck and found that the O2 sensors use ignition powered feeds to power the heater. Do I need to convert this harness to work with the 5.3 style sensors? I plan on having this ecm tuned for my application and was interested if anyone knew if it needs to be setup/enabled to run with the existing wiring for the O2 sensors. Thanks, Mark

mantycarguy

By the way the schmatics I am using is from a 2002 silerado hd vin u with isolated grounded O2 sensors

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iTrader: (13)

The 5.3 had the O2's wired both ways in 2002 so just find a calibration for the wiring you have