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Cannot change air flow from floor to vent or to defrost?

Tiny
ROBERT KOTEK
  • MEMBER
  • 2007 BUICK LUCERNE
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Cannot change air flow from floor to vent or to defrost. Just stuck on top vent. It blows fine. But cannot change between floor to vent to defrost.
Friday, January 10th, 2025 AT 8:05 AM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,969 POSTS
Yep, this is common when the mode actuator goes out, here is the location so you can change it out. It looks like you will need to remove the glove box to get at it. Check out the images (below). Please let us know what happens.
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Friday, January 10th, 2025 AT 11:08 AM
Tiny
ROBERT KOTEK
  • MEMBER
  • 1 POST
Just one pic. Said more pics! Cannot see exact location with this image.
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Tuesday, January 14th, 2025 AT 12:33 PM
Tiny
ROBERT KOTEK
  • MEMBER
  • 1 POST
I tried to go through glove box and the space is too small! You are wrong! The dash has to be taken out.
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Wednesday, January 15th, 2025 AT 10:08 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,969 POSTS
Okay, sorry about that. They do not say that in the instructions.
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Wednesday, January 15th, 2025 AT 10:09 AM

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