Check for corroded ground. If the ground is clean and tight check the voltage of steps while in operation. If above 12 vdc then the motor and or gear case could be going bad.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7