Cold out there !!!

'95 Aurora...I've got cold ((ok luke warm, but its -5 in Wisconsin and its not warm enough) coming from the heater ducts.

I've replaced the thermostat. No help.

Before I go and replace a heater core...Does anyone know of anything else obvious to check? Is there a water valve on the aurora?

I would like to see if the temp actuator is driving the plenum door to full hot, but I do not have the pin out for the HVAC control. Does anyone have this handy?

'95 Aurora...I've got cold ((ok luke warm, but its -5 in Wisconsin and its not warm enough) coming from the heater ducts.

I've replaced the thermostat. No help.

Before I go and replace a heater core...Does anyone know of anything else obvious to check? Is there a water valve on the aurora?

I would like to see if the temp actuator is driving the plenum door to full hot, but I do not have the pin out for the HVAC control. Does anyone have this handy?

Problem fixed...Thanks to another posting...I was another one of those dim witts that added regular antifreeze to my Dexcool system. I had the dealership do there curosive backwash and cleaned all the gunk out of the heater core.

I fail to see the usefullness in coming up with another antifreeze standard that is incompatible with the old fluid. Should have read the manual first I guess before I put my Dad's "Prestone" in the car...