My 2010 Chevrolet Tahoe 5.3 LT will cycle the starter but not start sometime and sometimes when it is cycling if I turn the the ignition switch back a little bit it will start. And, sometimes it just starts right up. When I turn the ignition switch to the on position all the gauges turn on and everything appears normal. I don't know if I have an ignition switch problem or a starer problem maybe someone out there can help me figure it out.