I agree with most of the other replies.  Check your trailer breaks and controller setup.  I have a Prodigy by Tekonsha in my 03 Dodge and it is AWESOME.  I can dial in the setting for each trailer I have on, and can adjust for loaded VS empty. I can stop my 3 horse slant (huge dressing room) on a dime with that thing... and barely jostle the horses.  I highly recommend it. PM me if you want... I drove that pickup today and can get the info out of it if I need to.