One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code(s) stored in the HVAC control module should be available to assist with diagnoses.
Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Chevrolet 1500 Pickup
Average mileage: 203,130 (80,000–333,333)
18 people reported this problem
11 people shared problem details
1992 Chevrolet 1500 PickupVisitor
I only get heat, even though the a/c is working properly. Fan is good. Someone has said the door is stuck in the heat position. Where is it located and the best way to fix it is how?
1998 Chevrolet 1500 Pickup200,000Visitor
air will not completely quit blowing from defrost vent
1996 Chevrolet 1500 PickupVisitor
When blower motor is on 2 highest settings,air can be heard roaring in the vent system but the proper amount of air volume coming from vents is not as when newer.Took door actuator off and seems to be working fine off of unit. Will explore the possibility of mode actuator being stuck or bad.The search for this problem continues.Post 5/26/2011.
Sometimes when driving down the road and I let down my window and then AC quits blowing out cold air; however, very hot air begins blowing out from underneath the steering wheel. When I let up the window the AC just blows out warm air out the vent and the hot air quits blowing out from under the steering wheel. It takes a days and/or months to blow out cold air again. I have not found a fix for this yet. I have just started reseacrhing the problem.
1994 Chevrolet 1500 Pickup196,000Visitor
No heat! replaced blend door actuator
1995 Chevrolet 1500 Pickup190,000Visitor
only blowing luke warm air on high heat not fixed yet
1992 Chevrolet 1500 Pickup165,976Visitor
1995 Chevrolet 1500 Pickup171,000Visitor
A.c. doesn't blow completely cold also doesn't have the velocity it used to have. Replaced compressor, hoses and condenser with no change.
1994 Chevrolet 1500 Pickup220,000Visitor
STILL HAVE THIS PROBLEM. TRYING TO FIGURE OUT WHAT NEEDS TO HAPPEN TO FIX.
1997 Chevrolet 1500 PickupVisitor
no heat or air
1996 Chevrolet 1500 Pickup295,000Visitor
darryl wingfield735 att.com
I actuallu have a 1988 1500. I cannot get air flow from the heater or AC into the middle dash o...
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looking to find the temperature blend door