No a/c in driver side vents - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-31-2016, 05:53 PM   #11
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The PA has 4 center dash vents. Is the far left one only pushing warm air?
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Old 05-31-2016, 07:05 PM   #12
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The 2 on the driver side are pushing warm, and the 2 on passenger are pushing cold
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Old 05-31-2016, 08:28 PM   #13
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Ok got to head off to work, but going to have a peak at the PA A/C FSM diagnostics and see if this also could be a vacuum or blend door situation.
Will post back what I find tomorrow...
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Old 06-01-2016, 12:43 PM   #14
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Have car at normal operating temp....

OK, just to avoid confusion, turn A/C off, put vehicle in vent mode, blower on high....... command full hot....should get 140-150F out of both sides......now, command full cold......should get ambient air from both sides, with A/C off.......If you have that, there is nothing wrong with your actuators......chances are, you are still low on refrigerant....
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Old 06-01-2016, 03:21 PM   #15
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^ Thanks Tech II ! Good plan, lets see if he has hot & ambient air across both side first...
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Old 06-01-2016, 04:28 PM   #16
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Well i know its good heat across all vents.... Good hot heat but ill giv it a shot whn i go sown into the garage
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Old 06-02-2016, 11:25 AM   #17
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Yea, has heat across the dash, and cant really get ambient temp, once i adjust to lower temps the park ave automatically kicks on the a/c... There is no setting for just a fan option. But when done the air on the 2 passenger side vents are cold and even the 2 rear middle vents for the rear are cold. But driver side is not cold at all just hot ambient air i would say.

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Old 06-02-2016, 03:05 PM   #18
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To bypass A/C on, select "Vent" position, lower temp ,adjust air flow to "Mid" and fan to high.
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Old 06-02-2016, 11:22 PM   #19
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Yeah, there should be a vent or ECON mode, which doesn't use the A/C......if you have it in "auto", when you command full cold or "60", the a/c will run....
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Old 06-03-2016, 01:17 AM   #20
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Thanks guys, i believe i was just low on refrigerant.. Ill find out tomorrow when the temp is up... But i did tried the heat first, then switched to vent mode then to ac, did it while i was sitting outside oreillys, and went in n grabd on of those cans of a/c pro a "12oz can" and added more to the system.. It took the whole can but the driver side is now cool... A noticable ice cool...
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