I have #516, 1999 with a silver looking fuel tank, on the top right is the filler hole and on the top left is a black knob. What in the world is it for? It will turn, but I'm afraid to pull on it or do anything with it till I find out what it's for. Thanks for the help.
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Bob & Peggy Standeford: Tulsa
45 ft. 2 slides, 500 hp. D60, #516
2004 Saturn station wagon