Question about GMC Yukon Denali
you own a set of pressure gauges for R-134a? If not, you can't do much
except make sure there is air flow out of rear unit. My guess is there
is low refrigerant in system. You can't tell unless you evacuate it and
see how much comes out. The new machines will pull it out and weigh it.
The only other explanation I can imagine is that he actuator won't move fully into the proper position and the fact that the air speed is lower on 1, it doesn't generate enough air pressure to pass the actuator.
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Posted on Aug 05, 2010
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Posted on Jan 02, 2017
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