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#2
09-21-2007, 09:02 PM
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Re: What part is this?
I have one of those in my '98 Burb. So, looking at the '98 C/K manual it could be called the "Water Valve Actuator" (Sub/Utility Only) or it could be called the "Hot Water Bypass" valve. My manual (genuine GM) doesn't give a clue as to what it's supposed to do.
As far as a part#, two things. Take your pic's to a chevy dealer along with your VIN and ask them. Go to http://www.gmpartsdirect.com/ , give them your VIN and ask what they can come up with. Hope this helps and if you come up with a good explanation of what this thing does I hope you'll share it.............Steve
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57 Chevy 210 65 Olds 442 Convertible (Another one sold) 75 GMC Vandura 3/4 Ton 1999 K2500 Old Body Style Suburban (Gone but not forgotten) 05 Dodge Ram 3500/5.9 Cummins 2012 Toyota FJ Cruiser Last edited by 777stickman; 09-22-2007 at 10:02 AM. 
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#3
09-22-2007, 01:16 AM
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Re: What part is this?
The name I am not positive,but it controls the water flow to the rear heater in your suburban.It is vacuum actuated and the lever opens a flap that allows coolant to circulate.Napa part number is H76454.I changed mine in July.
chuck's
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#4
09-24-2007, 09:09 AM
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Re: What part is this?
Heater control valve is what I referred to it as when I changed mine. Be careful pulling the hoses from the "Y" (splitter). It does become brittle from all of the heat and it is a dealer only part.
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#5
09-24-2007, 09:17 AM
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Re: What part is this?
Quote:
Looks like chuck's got it at Napa.
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'92 s-10 4x4 EC p/u '99 Blazer LT '99 Suburban LT
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