Finding wiring diagrams can really be a thorn in the flesh. I have started this thread to help those looking for wiring diagrams. All you just have to do is to state the year of your car, trim level and the system/part you want wiring diagrams for. I will post your requested diagrams on this thread
I need a 2009 impala Ls wiring diagram for Back side Co2 sensor, or back side of caytalic converter. From engine I have a pink, purple,white and gray wire and new sensor 2 white wires a black wire and a gray wire.