I'm back in business! I couldn't easily find where the ground wire led to and didn't feel like taking the time to tear the dash apart. I spliced into the blower motor ground wire and grounded it to the frame under the dash. Everything works properly now. Before, the ground wire was feeding...
95 Suburban Heater control
Gordy, did you ever get this issue figured out? I have exactly the same problem. I have a new heater control unit, the resistor has been replaced recently as well as the blower motor. I have power in the purple wire except in high. The black ground wire has low...