So to recap: if the heater selection is not blowing out warm air or any air, and the engine is not overheating, no water leaking, but turning the selector dial will cause doors to open and close - how do I get in there to find out if it's a broken cable to the heater or if that control is shot? Marvin Stein #17707 website: printeddrinkware.com email: marv@xxxx tel: 519-434-1666 fax: 519-434-7071 [Non-text portions of this message have been removed]