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Jul 31, 2020
OldBlueGMC, I own a 76 GMC K2500 Dad bought the truck new, first vehicle I ever drove and after 400,000 mile on the original 400cid I just rebuilt it. Although I now have a new issue the single wire fuel switching valve finally gave up and the only replacement I can find is a 6 wire 6 port valve. Has anyone wired one of these in? I have gone to newer switch on the dash and I can get the switching valve to activate but I can not get the fuel gage to register on either tank, any suggestions?

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