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Old 01-18-2006, 10:26 AM   #7
72 GMC K1500
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Join Date: Mar 2005
Location: Castle Rock, CO
Posts: 24
Re: How do you tell if a Brake Combination Valve is Defective?

Will the rest of my brake components work with a dual-diaphram booster? Or will I have to replace (again) the Master Cylinder? Is the dual-diaphram booster a 3/4 ton unit, or for a later year truck? The reason I am asking is when I go to NAPA I just want to ask for the correct part. Thanks.
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1972 GMC K1500, sbc 350, turbo 350
Castle Rock, CO
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