Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Couple of quick questions so that I can pull up the correct wiring diagrams and colors.
Are you replacing the upstream or downstream O2 sensor(before or after the catalytic convertor)?
Which engine size - 2.0L or 2.2L ?
Ok, below is wiring diagram that gives both wire colors and what they go to:
connector views with same information, plus pin number:
are you referring to the wires at the o2 sensor, or the wires on the wiring harness ?
The wiring schematic I provided shows the wiring colors on the harness side, not the O2 side, which is what you need to know-the harness side. it doesnt matter what the colors are on the original O2 sensor. it only matters what the wiring color is and what they go to on the harness side.
can you get me the 17digit VIN code and I can double check the diagrams from it.
what are the colors of the wiring on the harness side-this is the wiring that goes to the pcm, not the pigtail wiring harness off the o2 sensor itelf/
I am going to opt out as it doesnt seem you are able to read schematics. another expert will be with you shortly.
please dont reply to this as it will lock the question back to me and no other expert will be able to help you
I just recently purchased a 2004 Tahoe with 155000 miles