# Have no heat

**URL:** <https://community.cartalk.com/t/have-no-heat/162956>\
**Category:** Maintenance/Repairs\
**Tags:** pontiac\
**Created:** [April 17, 2020, 1:04am UTC](https://community.cartalk.com/t/have-no-heat/162956 "2020-04-17T01:04:43Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Andrew\_Johannes](https://avatars.discourse-cdn.com/v4/letter/a/41988e/32.png) [@Andrew\_Johannes](https://community.cartalk.com/u/Andrew_Johannes)\
**Post date:** [April 17, 2020, 1:04am UTC](https://community.cartalk.com/t/have-no-heat/162956/1 "2020-04-17T01:04:44Z")

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Went to work this morning had no heat all day. Heater core was replaced about six months ago and bought and installed a new thermostat today. Still no heat. Any suggestions?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [April 17, 2020, 1:07am UTC](https://community.cartalk.com/t/have-no-heat/162956/2 "2020-04-17T01:07:26Z")

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Pontiac?

Maybe a bad blend door actuator?

Tester

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [April 17, 2020, 2:39am UTC](https://community.cartalk.com/t/have-no-heat/162956/3 "2020-04-17T02:39:45Z")

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Low coolant level?

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**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\
**Post date:** [April 17, 2020, 3:18am UTC](https://community.cartalk.com/t/have-no-heat/162956/4 "2020-04-17T03:18:47Z")

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What model and year Pontiac? Describe the problem a little more. Do you have air flow? Is there a temperature gauge? If so, what does it show after the car heats up?

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**Author:** ![Andrew\_Johannes](https://avatars.discourse-cdn.com/v4/letter/a/41988e/32.png) [@Andrew\_Johannes](https://community.cartalk.com/u/Andrew_Johannes)\
**Post date:** [April 17, 2020, 3:32am UTC](https://community.cartalk.com/t/have-no-heat/162956/5 "2020-04-17T03:32:00Z")

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Checked coolant it is not low. Car warms up and sits the correct temperature it’s always ran at just for some reason won’t blow hot air, flow is fine. It’s a 2004 Grand Prix GT. Radiator was replaced 2 weeks ago. I thought maybe water pump not getting coolant to the heater core but there’s no leaks indicating it’s bad.

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**Author:** ![Barkydog](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/barkydog/32/2470_2.png) [@Barkydog](https://community.cartalk.com/u/Barkydog)\
**Post date:** [April 17, 2020, 5:48am UTC](https://community.cartalk.com/t/have-no-heat/162956/6 "2020-04-17T05:48:16Z")

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Make sure your blower motor is blowing, could be as simple as a blower variable resistor needed.