Jayco’s Seneca was a popular motorhome for 6 years until General Motors stopped producing the Kodiak chassis and the 8.1-liter Vortec gasoline engine in 2010, effectively ending Seneca production for the 2011 model year. During that hiatus, Jayco redesigned the motorhome and debuted the 2012 Seneca, built on the Freightliner M2 Business Class chassis.
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