'89 G20 Heater Box, Color-coded Vacuum Lines
October 2nd, 2012, 8:26 PM
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'89 G20 Heater Box, Color-coded Vacuum Lines
I'm looking for a diagram that shows the correct hook up of the different color-coded vacuum lines running to the heater box on a 1989 G20, 5.7, w/AC. I have a feeling that the previous owner hooked them up wrong when replacing the heater core, since air blows thru the dash vents when set on 'heat' rather than the floor vents. Can anyone help me out with a diagram?
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baskervi
Tahoe & Suburban
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January 13th, 2011 7:37 PM
