heat! on 1993 Nissan Altima

I have no heat! replaced resistor, all fan settings work, a/c works. Coolant is at proper level. does this just leave the heater core or is there something else i can check before that huge job and expense????

by in Beverly Hills, CA on October 30, 2010
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1 answer 1 comment
ANSWER by , October 30, 2010
Make sure your heater control valve is actually opening.
COMMENT by , November 26, 2010
where is the heater contriol valve located