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Old 02-05-2013, 10:50 PM   #2
bighaas79
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Join Date: Nov 2008
Location: manly iowa
Posts: 390
Re: 03 Yukon XL 2500 Fuel system problem

If the vapor or vent lines, evap canister or, vent valve is plugged it can cause these problems. these era trucks were notorious for road dust collecting in the lines, canister, and valves. Gm issued relocation kits to try and eliminate these problems.
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