1999 Chevrolet 1500 Pickup Q&A

1999 Chevrolet 1500 Pickup Question: heater problem

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 -
Answer 1
electic motor for heater door i can not think of name of part bleed actulater motor 39.95 atautozone.com go to heater parts -
Answer 2
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. -
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