What is this part??
For sure! 
Thread Starter
Le Mans Master
Joined: Feb 2004
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From: Killeen TX
St. Jude Donor '14
Former Vendor
Joined: Aug 2006
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From: Jeffersonville Indiana 812-288-7103
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
If you turn the car to the cool side, then the vacuum hose that is cut will leak vacuum trying to suck the shut off valve closed.
Not to mention the hot water that will circulate through the heater core and blow out hot. This will affect your AC performance, as well as the way your engine runs.
Willcox
Not to mention the hot water that will circulate through the heater core and blow out hot. This will affect your AC performance, as well as the way your engine runs.
Willcox
