Spartan Chassis
authorized service center locator will have the current information you need.
Apparently Cummins Rocky Mountain in Sparks, NV is the appropriate Spartan facility near your location.
It shows Camping World, BUT, the local CW has a large sign stating CW does not do warranty work.
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2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy