GN's been sitting for 4 years since I moved to Indiana, and now I'm moving to Houston. (I just realized I'm 10 minutes from PTE, oh well). It started up fine and seems to run ok, but the powermaster won't shut off unless I unplug the motor, or unplug the grey brake switch. Both shut the motor down. The troubleshootin g guides I could find reference special GM tools. My brake light is not on. The pump pumps fluid out of the reservoir, and the levels seem to hold (or at least change slowly) when off. The switch seems to always read ~2.4ohms across all 3 pins, any combination. I would think if it were the switch, I'd get a brake light, so maybe its the motor. Before I do that, the fluid looks like crap, so I will flush it out. Any input? I need the brakes to work well enough to stop the car when I load it on the truck.
On second thought, I'm going to check the brake light also. That might explain why I don't line up with the troubleshootin g guides.