AC vacuum hose question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72 K20 · 05-07-2015, 12:15 AM

Hi ! I am redoing the A/C system in my 72 and want / need to replace all of the small vacuum hoses that control the actuators , heater ,valve , etc.

What size is that hose ? How much does it take to replace it all ? I believe there is a vacuum routing diagram in the manual . Most of the hoses are MIA so I don't have any idea how much I need.

Thank You in advance for any and all information !!!!

Have a great day !!! Tom

05-07-2015, 12:15 AM	#1
72 K20 Registered User Join Date: Mar 2011 Location: Brandon,Iowa Posts: 391	AC vacuum hose question Hi ! I am redoing the A/C system in my 72 and want / need to replace all of the small vacuum hoses that control the actuators , heater ,valve , etc. What size is that hose ? How much does it take to replace it all ? I believe there is a vacuum routing diagram in the manual . Most of the hoses are MIA so I don't have any idea how much I need. Thank You in advance for any and all information !!!! Have a great day !!! Tom



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