why wont my heat work in my 91 buick skylark? on 1991 Buick Skylark

i have replaced the water-pump,thermostat,heater core ,radiator,heating sensors,heater control module and a new radiator cap but still no heat what could this be .its not the blower it blows strong but only cold air and the car doesnt over heat

by in Pittsburgh, PA on January 12, 2012
1 answer
ANSWER by on January 12, 2012
Hot water obviously isn't reaching the heater core.Sounds like it's related to a valve or you have an air lock somewhere.
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