Heater only blows cold air

Tiny
BUICK8989
  • MEMBER
  • 1989 BUICK LESABRE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 300,000 MILES
Put antifreeze in but still no heat only blows out cold air. Don't know what is going on with my heating. Please help?
Friday, February 7th, 2020 AT 4:38 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
We need to check the blend door actuator which is what controls the air being directed over the heater core. This is what is needed in order to get the air hot. Your actuators are run by vacuum lines so if this is cracked or disconnected then the actuator will not move the door position.

Take a look at these attachments and let me know if you have questions. Thanks.
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Monday, March 22nd, 2021 AT 12:59 PM

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