The reason is because I’ve been down this road many times over the years and to ensure a lasting repair I replace the whole harness. I’ve had situations where you repair the broken wires and then more just keep breaking…. Remember the driver door is the most heavily used so the wiring in its door harness bends back and forth a lot over the life of the vehicle. Water stains and corrosion in the main connectors are also common reasons why you’d want to replace the whole thing. If the parts were not available cheaply then yes I’d have to repair it. Thanks.
The light goes off for other reasons too like sensor, loose wires..check plug first, module......mine keeps going on and off right now and I know diagnostic tools and Chevy diagnostic will not even read the problem..manual check
