• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

P0135 need pcm pin out for 5.3L to rewire

DanMurphy

New member
I have replaced sensor twice.
Replaced pigtail to o2 sensor 1.
I have 12v power to harness.

Any other ideas besides replacing 3 wires back to the pcm? Does anyone have the pin out diagram and with wire color codes and descriptions for the 3 wires back to the pcm. Been trying to pull wires through main harness which is a chore in it self not to break any wires going back to PCM.
 


Solved, found wires receiving magnetic field through main harness. Pulled wires out and wrapped in electrical tape and separated in new wire loom with just the alternator cable. Problem solved

It was all entangled so I cut wires at pcm and butt connected with heat shrink connectors
 
Back
Top