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UncleMan
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What type of gas cap do I need?
1991 Chevy silverado c2500 5.7L. Does it need a vented one or non vented?
1 Answer
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- 9 years agoFavorite Answer
That is a non-vented cap for emissions. The correct cap will let air into the tank as the level goes down but not let fumes into the atmosphere.
Source(s): I worked in a G.M. dealership for 10 years and work in a aftermarket parts store.
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