MY HEATER IS NOT GETTING HOT

Tiny
SHILLARD31
  • MEMBER
  • 2001 CHEVROLET TAHOE
  • V8
  • AWD
  • AUTOMATIC
  • 125,567 MILES
My heater is not getting hot the heater cord has been checked, the radiator has been flushed, the hose has been checked and what else is there to be done. Please help
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Wednesday, November 19th, 2008 AT 10:01 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Is the heater hoses both hot? Here is a guide to help you.

https://www.2carpros.com/articles/car-heater-not-working

Joe
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Thursday, November 20th, 2008 AT 7:34 AM
Tiny
SHILLARD31
  • MEMBER
Checked to see if the floor on the passenger side was wet but it was not.
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Thursday, November 20th, 2008 AT 4:14 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
Is the engine warming to normal operating temp? Is the coolant level full? If you feel the heater core hoses when the engine is hot and the heater is on, are they both warm?

Let me know.

Joe
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Thursday, November 20th, 2008 AT 11:15 PM
Tiny
SHILLARD31
  • MEMBER
Yes the hose is warm and the coolant is full the radiator was flushed today all of that has been checked please help me and thank you
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Friday, November 21st, 2008 AT 4:12 PM
Tiny
JQBALL2U
  • MEMBER
What does the temp gauge read (the one that looks like a thermometer [most times])?
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Wednesday, December 10th, 2008 AT 5:14 PM
Tiny
DENNISFC2000
  • MEMBER
Was the heater core flushed? I flushed the heater core on my Blazer and the heater is hotter than ever. Take both hoses off that are coming from the radiator and hitting the fire wall. Get your water hose and put it on one and then the other. Your going to get wet but it will work. If that is not the case then check the thermostat. Thanks
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Wednesday, December 24th, 2008 AT 4:22 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi:
If both hoses are hot and the engine runs at a normal operating temp (around 200 degrees) there must be a problem with the blend door not opening to allow heat to enter the cab. Near the heater core is where you'll find the item. It's located in the HVAC duct work and may be stuck.

Check for that and let me know what you find. NOTE: The heater core is aprox behind the glove box.

Let me know if this helps.

Joe
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Wednesday, December 24th, 2008 AT 6:24 PM
Tiny
KOKOE
  • MEMBER
My heat is luke warm. Both hoses ontop of the motor get hot.I changed the thermostat.I filled the antifreeze.I have no water on the passenger side floor and the blendor box is blowing out fine. Could this be a early onset of issues with my heater core or waterpump? Its getting cold out and I cant drive my truck because it takes 40min for the temp to go up in the truck.
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Monday, November 26th, 2018 AT 3:48 AM
Tiny
KEN
  • ADMIN
Hello,

It sounds like you have a weak blend door actuator that is not closing completely. Here are tow guides to help us get started:
https://www.2carpros.com/articles/car-heater-not-working

and

https://www.2carpros.com/articles/replace-blend-door-motor

Please run down these guides and report back.

Cheers, Ken
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Monday, November 26th, 2018 AT 10:27 AM

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