GordoPanocho
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- Jan 23, 2019
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***Assuming an actuator is the issue, any idea which one is my problem?***
According to one search, the most common culprits for an AC not blowing cold are low refrigerant, a faulty A/C compressor relay, a bad evaporator temperature sensor, or a clogged condenser. But the rest of my searches keep pointing to actuators.
I've searched a lot of sites and watched various YouTube videos, but I often second guess myself. So, here's what info I've collected.
2011 Tahoe LTZ
dual zone electric climate control
* My AC isn't blowing cold. It just blows harder the closer I get down to 60°. Nothing makes it blow colder.
* When I leave the driver side at 60° and take the passenger side to 90°, all upper (dashboard) vents barely blow.
* When I do the reverse (driver 90°, passenger 60°), it quits putting out air in the upper vents and kicks in the heat/defrost vents; I can hear and feel it.
I completed the HVAC reset/recalibration by pulling the fuse(s) etc. It did start back at 74° as it should but it didn't fix my issue. I didn't think it would anyway.
I keep seeing three (3) main actuators in the "how to repair" videos. They were described as follows:
* driver side (behind/under steering wheel) -- mode door actuator (air direct)
* passenger side (near feet) -- driver side blend door actuator (temperature)
* passenger side (behind upper vents) -- passenger side blend door actuator (temperature)
I hope to get it scanned soon in case I can clear the Diagnostic Trouble Codes (DTCs) and perhaps find one of the following (assuming they're correct):
* B0228 recirculate actuator
* B0413 drivers air temperature actuator
* B0423 passenger air temperature actuator
* B0433 auxiliary air temperature actuator
* B3779 mode actuator
* B3782 auxiliary mode actuator
And I came across this list of part # info:
* 89018365 Air Inlet Valve Actuator Behind Glove Box Above Blower Motor Installed Vertically and Facing Left Side
* 89018374 Mode Valve Actuator Behind Navigation Left of Center Vents Installed Vertically and Facing Left Side
* 89018375 Temperature Valve Actuator - Driver's Side Passenger Footwell Towards Console Installed On Bottom and Facing Down
* 89018375 Temperature Valve Actuator - Passenger Side Behind Navigations Right of Center Vents Installed Horizontally On Top
According to one search, the most common culprits for an AC not blowing cold are low refrigerant, a faulty A/C compressor relay, a bad evaporator temperature sensor, or a clogged condenser. But the rest of my searches keep pointing to actuators.
I've searched a lot of sites and watched various YouTube videos, but I often second guess myself. So, here's what info I've collected.
2011 Tahoe LTZ
dual zone electric climate control
* My AC isn't blowing cold. It just blows harder the closer I get down to 60°. Nothing makes it blow colder.
* When I leave the driver side at 60° and take the passenger side to 90°, all upper (dashboard) vents barely blow.
* When I do the reverse (driver 90°, passenger 60°), it quits putting out air in the upper vents and kicks in the heat/defrost vents; I can hear and feel it.
I completed the HVAC reset/recalibration by pulling the fuse(s) etc. It did start back at 74° as it should but it didn't fix my issue. I didn't think it would anyway.
I keep seeing three (3) main actuators in the "how to repair" videos. They were described as follows:
* driver side (behind/under steering wheel) -- mode door actuator (air direct)
* passenger side (near feet) -- driver side blend door actuator (temperature)
* passenger side (behind upper vents) -- passenger side blend door actuator (temperature)
I hope to get it scanned soon in case I can clear the Diagnostic Trouble Codes (DTCs) and perhaps find one of the following (assuming they're correct):
* B0228 recirculate actuator
* B0413 drivers air temperature actuator
* B0423 passenger air temperature actuator
* B0433 auxiliary air temperature actuator
* B3779 mode actuator
* B3782 auxiliary mode actuator
And I came across this list of part # info:
* 89018365 Air Inlet Valve Actuator Behind Glove Box Above Blower Motor Installed Vertically and Facing Left Side
* 89018374 Mode Valve Actuator Behind Navigation Left of Center Vents Installed Vertically and Facing Left Side
* 89018375 Temperature Valve Actuator - Driver's Side Passenger Footwell Towards Console Installed On Bottom and Facing Down
* 89018375 Temperature Valve Actuator - Passenger Side Behind Navigations Right of Center Vents Installed Horizontally On Top