The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - How do you tell if a Brake Combination Valve is Defective?

72 GMC K1500 · 01-18-2006, 01:49 AM

Can anyone tell me how you can diagnose a combination valve? I have replaced almost ALL of the front and rear brake components on my truck but the brakes are still terrible! I get very little nose dive on the truck when the brakes are applied with a lot of pressure and my only thought was that the metering valve component of the valve may be defective. Any thoughts?

01-18-2006, 01:49 AM	#1
72 GMC K1500 Registered User Join Date: Mar 2005 Location: Castle Rock, CO Posts: 24	How do you tell if a Brake Combination Valve is Defective? Can anyone tell me how you can diagnose a combination valve? I have replaced almost ALL of the front and rear brake components on my truck but the brakes are still terrible! I get very little nose dive on the truck when the brakes are applied with a lot of pressure and my only thought was that the metering valve component of the valve may be defective. Any thoughts? __________________ 1972 GMC K1500, sbc 350, turbo 350 Castle Rock, CO Last edited by 72 GMC K1500; 01-18-2006 at 01:50 AM.