2017 Yukon xl alt AC Problems

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Teejay123

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I’m having some problems down here in FL. Ac was not blowing cold.

Thinking I needed refrigerant, I Measured the low side and got 41 lbs. so I did t add anything.

Ran some temp tests.

I set rear thermostat to low - vents blow 65.
65 set = air at 65, 70/70 etc.

Front unit, the passenger side is always about a degree or 2 colder than the driver side.

The driver side air temp reads at about 80-81 degrees when the thermostat is set at low all the way up to 75 then the air temp goes up a couple degrees.


Does this seem like a blend door actuator problem? If so, which one?

Does anyone have any links to a diy tutorial? Thanks
 

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