Abstract: A loader and a control system for a loader provide for monitoring the position of a part of the implement carried by the loader. The loader has a body with left and right upright tower portions, and a loader drive system including ground engaging drive elements. Left and right interconnected lift arm assemblies each have an implement lift arm pivotally connected with a corresponding tower portion of the body at a lift arm pivot point. A lift actuator is connected between the body and the lift arm. The implement is pivotally connected with the lift arm assemblies about an implement pivot axis. The lift arm pivot point and the implement pivot axis in side elevation define a straight reference line. At least one implement tilt actuator is connected between at least one of the lift arm assemblies and the implement. A position sensor is mounted on the body at the level of, or above, the lift arm pivot points.