Why wont my fuel injectors open i have checked

IF YOUR TRUCK HAS THE THEFT SYSTEM IT COULD BE ENABLE. YOU WOULD NEED TO CHECK FOR CODE WITH A SCANER. WENT ITS UNDER THAT MODE IT WILL DISABLE THE INJECTOR AND FUEL PUMP.ALSO CHECK THE THEFT LIGHT ON THE DASH IF FLASHING IN THE ON POSITION THEM YOU WOULD TO GET REPORGRAM ANY LOCKSMITH WITH COMOUTER CAN DO THIS. YOU CANNOT DO THIS WITH A SCANER.