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WHY WONT HEAT OR AIR BLOW THROUGH VENTS ON 1997 BUICK PARK AVENUE ULTRA?


Jack, Did you check for blown

Jack,

Did you check for blown fuses or circuit breakers?
Did you check for a blend door problem?
Is the blower switch bad?
Is the head unit bad?
Is the blower motor burned out?

this car uses electric

this car uses electric actuators to switch from defrost to vent to heat.
make sure that these actuators are working when the switch is turned to defrost, vent & heat.
the actuators are located on the"heater box" under the dash.


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