Since my 2020 Accolade does not have one I am going to say the Seneca does not have one either. Based on my reading that would be a Freightliner option for the chassis.
BTW, you only need to post the question once.
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Dave
US Army (Ret)
2020 Entegra Accolade 37TS
2019 Jeep Grand Cherokee Trailhawk TOAD