Someone out there help me please
First, you need a GM service manual so you will have an acurate wiring diagram, then you need to label everything that you dis-connect if you can identify it. Heater, radio should be easy, the modules and wires going to the engine and body are harder. Take your time,
identify what the harness and connectors are. You will become an expert soon. Find a good GM electric guy if all else fails.

