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HVAC vacuum, or lack thereof [message #280262] Fri, 19 June 2015 09:46 Go to previous message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma:
Senior Member
So in the never ending quest to get decent AC, I have found that my hot water shut of valve isn't getting vacuum when the control is in the AC position.
I have verified the purple line goes to the vacuum canister and I know I get vacuum there as I have a vacuum gauge.
A quick check shown things are mostly where they should be on the dash control.

Has anyone fallen down this particular GMC rabbit hole?
Should I pull the control unit and clean it up??

TIA


Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
 
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