Cold starting problem Chevrolet Silverado 2

I have a problem at cold starting, the pick-up is a cehvrolet silverado 2500 engine 4.8 model 2008, in the morning it costs that start up to the thirteenth startaz Vehicle starts walking but it does not turn on Ignition on board Lights Chek, battery, turn it off and turn it on again the vehicle returns to normal I do not know if there is a module of ignition .......