Blowing hot air, on the driver side vents & the passenger side vents blows cold air?

Tiny
SUNDAY2813
  • MEMBER
  • 2004 CHEVROLET SUBURBAN
  • 5.3L
  • V8
  • 2WD
  • AUTOMATIC
  • 230,000 MILES
My Heater is blowing hot air, on the driver side vents & the passenger side vents blows cold air, as soon the vehicle is on?

The heat blows about 1-5 (3)
The cold blows about (2)

The temperature dial doesn’t work from
1-3 only turns on - 4-5 high

Thank you
Sunday, August 3rd, 2025 AT 11:26 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Yep this means the passenger side blend door actuator is not working here is a guide to help you change it out and show you which one is for the right side.

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

Let us know if you need anything else.
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Monday, August 4th, 2025 AT 12:25 PM

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