48,000 miles; trouble with auto leveler for years; dealer removed sensor arm from position sensor. vehicle would cycle the load level pump for a few seconds and then quit until January 2017. I could smell a burning resistor in the cabin and several weeks later I noticed the rear 1/4 vent windows would not operate. Shortly after that I also realized the leveler pump was not cycling. I have since: tested the pump and it works fine when manually engaged. clipped the "yellow" power wire at the overhead console and jumpered 12V and the windows work fine under switch control. I have not been able to find a wiring diagram that could lead me to a breakout point to continue troubleshooting. I do not want to start tearing out the header panel and roof liner without some idea about how the thing is wired / how the wiring is laid out in the vehicle.
2004 GM Silhouette (red)