Heater blowing cold air on passenger side

Tiny
LISALAW1
  • MEMBER
  • 2019 CHEVROLET MALIBU
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 46,000 MILES
Cold air is blowing when the heat is on. It's on the passenger side only.
Monday, February 15th, 2021 AT 12:48 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More then likely this is the blend door on that side. The blend door is responsible for routing the heat over the heater core and if it is not cold then this is the most common cause. Here is a guide that helps with this:

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

Below you will the process from the manual on this. Let me know if you have questions. Thanks
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Monday, February 15th, 2021 AT 4:30 PM

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