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2001 chevy: The heater is not blowing out hot air

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I have a 2001 chevy...
I have a 2001 chevy silverado. The heater is not blowing out hot air. what could be the problem?
Submitted: 10 years ago.Category: Chevy
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Answered in 1 minute by:
12/8/2007
Chevy Mechanic: Wrenchtech, ASE Certified Technician replied 10 years ago
Wrenchtech
Wrenchtech, ASE Certified Technician
Category: Chevy
Satisfied Customers: 1,403
Experience: 40 years experience with ASE certification as Master Technician with L1--Repair Shop Owner
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Is the blower not working or is the problem the temperature of the air?
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Customer reply replied 10 years ago
Reply to Wrenchtech's Post: I guess it would be the temperature. It is not blowing out warm air at all regardless of what temperature we have it on
Chevy Mechanic: Wrenchtech, ASE Certified Technician replied 10 years ago
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch.
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Customer reply replied 10 years ago
Reply to Wrenchtech's Post: If the heater hoses are hot to the touch what should we do? If the aren't what does that mean?
Chevy Mechanic: Wrenchtech, ASE Certified Technician replied 10 years ago
If neither are hot, then the engine may not be getting hot enough. If one is hot and not the other, then the heater core is likely restricted. If they are both hot, then it is a control problem inside due to a problem with the electric blend door actuator or the blend door itself jamming.
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Wrenchtech
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