Chevrolet Avalanche 1500 2002-2004. Chevrolet Avalanche 2500 2002-2004. Chevrolet Tahoe 2002-2004. Chevrolet Suburban 1500 2001-2004. Chevrolet Suburban 2500 2000-2004. Fuel filter. Vapor emission line – runs from the purge valve to charcoal canister.
