Did you check the in-line fuse first.
No you will not hav to support the unit prior to removing the motor.
I think it requires two bolts be removed.
Once removed you can get the part numbers off the old motor and call etrailer for ordering info and to advise about using larger motor!
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2017 Ram 3500 CC Cummins
2011 Keystone Laredo 266 RL
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