Replace elect awaning with manual

Yes you can replace it. From GR I would drive to down to White Pigeon and pick up the parts needed to replace/repair a awing.
3 places to try.
Johnsons Surplus
Toms Borderline Bargins
Bontrager's Surplus
A couple in Elkhart.
RV Part Nation
Factory RV Surplus
There are others in the area. But these are the most popular. All but Toms do shipping.
Also check Ebay. Lots of awning parts offered there.