2007 Yukon Denali – no air flow – freezing but not low on charge?

[Dan-G]

Thanks so much for all the help. Here is the chart showing the capacities for the Yukon from my AlldataDiy account. This system does have the rear AC.

I’ll probably just drain the oil from the condenser and the accumulator and follow the chart on how much oil to add to the new parts.

Hopefully the weather will be OK and I’ll do the job on Saturday.

Pag-1b.jpg (128.16 KiB) Viewed 3524 times

[tbirdtbird]

Good, nice to have that breakdown

Maybe add 1 extra oz somewhere to account for the leak

[Dan-G]

OK, this project is all done. Thanks so much for all the help. I replaced the condenser and the accumulator. I added an extra ounce of oil. The hoses all looked really good. I put in the factory charge of 48oz.

My old pressure switch had failed in the closed position just as predicted. I checked it with my meter and it was still closed after I pulled it out. The new pressure switch closes at 40 psi and opens at 20 psi. So it reads as open before you install it. So the leak is fixed (as far as I can tell so far). I went for a nice long drive and as expected, no more freezing.

[tbirdtbird]

Yay!!