The motor from the build is an electric power steering pump from a junkyard car. This gets mounted on a one-off rear bike rack and drives the rear tire with help from some gears from a pocket bike ...

The power-steering pump pressurizes the hydraulic fluid that helps the driver turn the steering wheel. Signs of steering-pump failure include leaks, noises or decreased assistance while steering.

Service Update N242485780 warns that an unspecified number some of Silverado HD and Express units may contain a power steering pump that may prematurely fail. It’s unclear what causes the ...