HI mkesdy,
Welcome to the Heartland Owners Forum and to the family. We have a great bunch of folks here with lots of information and all willing to share their knowledge when needed.
I don't know if your slide is electric powered or hydraulic ram operated. But I would trace the wiring to the motor or the pump and check all the connections to start with. Hopefully some of out other members will jump in soon with more and better help.
Let us know what you find,,, it may help someone else.
Jim M