my vent wont switch to defrost or any other position all functions work ac heat just wont switch from vent where are actuators located at on this truck
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1999 Chevrolet 1500 Pickup Question: heater problem
Answer #1delane 72 garage and body shop November 14, 2010, 20:07Master
electic motor for heater door i can not think of name of part bleed actulater motor 39.95 atautozone.com go to heater parts
DaveJHM November 14, 2010, 21:05Master
Typically the direction of air flow (defrost, dash vents, floor) is controlled by a vacuum motor. Check around under the dash for broken or disconnected vacuum hoses....it may help.