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Old 09-12-2016, 01:44 PM   #1
Jarvis-69 GMC 1500CK
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Join Date: Aug 2016
Location: North Sask, Canada
Posts: 84
Gas tank venting

New to old vehichles (oldest before this is a 91 Cadi).

When ever I open up the gas cap (cab mounted behind the seat) Allotof pressure is released, and I notice it seems to affect my gas gauge unless I vent it every day. Is this a normal thing to happen?
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