vroque210

I NEED to find a diagram that shows which plug goes to what on an 04 suburban 5.3 o2 sensors. Both banks and both sensor 1. I'm almost sure they're pinned wrong on my pcm as was my transmissions harness. I just replaced my o2 sensors so I know those are good but its still showing codes for them so I wanted to check the wiring. I have blue/green connectors. Don't know if they're different or not but my o2 sensor plugs both have 4 wires. Any help is appreciated thanks

vroque210

Anyone?? I'm trying to get to the track with my s10 but it won't run correctly!

Bowtie316

iTrader: (1)

I don't have the diagram for the 04, but what I did on mine was go to alldatadiy.com and pay the money to get the GM diagrams.