The lower grille bar on my new (to me) 2011 has damage on it so I purchased a new one but I need some help with the installation. Do I have to take the whole grille off (how is that done?) or is there a way to do it while the grille remains on the truck? The rest of the grille is perfect.

 

Yup take the grill right off. 4 bolts up top and pry the grill forward a bit, look down at the bottom, you will silver clips, push them with a long screw driver to release the lower part of the grill. From the backside there are few nuts and a bunch of clips you will have to remove, the grill bar will pop right off after all that.