Mode door actuator

Tiny
BMONTOYA91
  • MEMBER
  • 2021 CHEVROLET BLAZER
  • V6
  • 4WD
  • AUTOMATIC
  • 65,000 MILES
Where is the mode door actuator located on a 2021 blazer?
Friday, December 26th, 2025 AT 12:52 PM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 15,341 POSTS
They are not a lot of fun to get at, they are on the side of the HVAC case mounted on the mode cam housing above the left footwell. The get to the actuator you remove the footwell duct and the brake and gas peddle assembly to get to the actuator. However the cam is the more common problem and for that you have to strip out most of the dash to get to it. What is the system doing?
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Friday, December 26th, 2025 AT 5:00 PM

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