No heat

2010 CHEVROLET IMPALA
190,000 MILES • 3.5L • 6 CYL • 2WD • AUTOMATIC
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STEVE LAURIE
  • MEMBER
  • 3 POSTS
My car has duel climate control and only blows out cold air in all positions. Loud ticking noise at start for about thirty seconds then it stops, but still no heat at all.
Oct 25, 2018 at 7:32 AM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning.

Make sure the coolant level is correct.

Make sure the heater hoses are hot to the touch at the firewall.

The ticking may be the blend door actuator. that controls the heat in the car.

Roy

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



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Oct 25, 2018 at 10:14 AM
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STEVE LAURIE
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It feels like the one that is ticking is coming from under the glove box, can this be the one that causes no heat on both sides?
Oct 25, 2018 at 10:48 AM
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SURGEIMPULSE
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  • 67 POSTS
I would agree with ACEMASTER. The blend door might also be stuck in a position where it would only let cold air vent, so I would remove the old actuator and see if you can manually move the door.
Oct 25, 2018 at 12:55 PM
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ASEMASTER6371
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Yes, remove the actuator and see if you can move the door manually.

Roy
Oct 25, 2018 at 1:09 PM
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STEVE LAURIE
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So do you think it is the blend actuator or the heat actuator? I noticed both are located behind the glove box, the reason I ask is the only time the ticking starts if when I adjust the temperature, it does not happen when I direct the air flow to different spots.
Oct 25, 2018 at 1:21 PM
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ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
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The blend door actuator is the heat actuator.

Remove it and move the door manually.

Roy
Oct 25, 2018 at 1:29 PM