Good day, gearheads...The basic problem is that the "traction control" and the "service 4x" trouble lights come on intermittedly. I have replaced the brake pedal switch, all 4 wheel sensors, front wheel bearings and have taken it to 3 shops. Just picked it up today from a dealer shop and the lights popped on again before I got home. Some days I can drive for miles, and no issues. Or I can just start the engine and both lights come on. I'm trying to get this ready to sell and these are the last 2 issues I need to correct before the for sale sign goes on. Any ideas will be greatly appreciated. 2012 Ram Express 4x4 hemi.