Last night my wife 2009 Trailblazer gear shifter knob become totally free and not shifting to any gear and stuck at P. Called the recovery, but challenge was to get it out of Parking to push or winch it and not to break the parking lock / gear. Hunt one roadside mechanic who quickly fixed the shifter cable (I hope) and car came back home on its own. Schedule the visit today to see our dear @Barry for further inspection and seeing if wire is repaired professionally or need replacement....?