Toyota is keeping up the fight to be a belt-holder in the heavyweight division: pickups. The automaker laced on the gloves at the Chicago Auto Show, where it showed the redesigned Tundra for the 2014 model year. The truck will go on sale in September. Pricing has not been announced. The Japanese automaker said this is the first big change to the current-generation truck that debuted at the 2006 Chicago Auto Show as a 2007 model.