Parts Required 1 Denali Bumper Cover GM12479754 1 Reinforcement Bar GM15060470 1 Filler GM88937235 10 Retainers (push pins) GM15149708 7 Retainers (push pins) GM14093088 1 Fog Lamp Left GM16531085 1 Fog Lamp Right GM16516335 6 Nuts (Fog Lamps) GM11609411 I found everything on Amazon and e-Bay, LMC had the push pin retainers. I bought the bumper cover and grill used. Remove the plastic cover over radiator Remove lower valance (2 bolts and push pins) Remove bumper cap (pull off or to save tabs squeeze with pliers from the inside) Remove grill (One 10mm bolt - turn grill locks counterclockwise to release) Pull Grill end clips out of fender Remove the Two Upper Bumper Bolts 17mm socket (marked green in photo leave the red ones) Remove both lower bolts 17mm socket Now we have everything off except the two rubber fillers under the parking lamps. Go ahead and remove those. They are to long for the Denali parts. Now place the Re-Bar on the frame horn brackets and use two of the original sierra bumper bolts in the upper re-bar. Start but do not tighten all the way yet. Install two original sierra bumper bolts in the lower re-bar. Now you can line up and adjust the Re-Bar to the right or left. I used a tape measure to center, measuring off the front of each fender. Now tighten the 4 re-bar bolts. Attach the original sierra outer bumper brackets on each side You need to move both the lower grill retainer locks down to the next slot. Be careful not to damage the power steering cooler while removing the drivers side. Pull the tape off the filler and line up the holes in the re-bar to the fillers slots... then stick down on top of the re-bar. Carefully work the covers tabs over and on the other side of the re-bar repeat on each side at the wheel opening. Test fit the grill and look at the lines between the cover and grill shell. If you are happy with the fit remove the grill and install all the push pins into the cover, replace the grill, headlights, corners, fogs and lower grill. You can see the wavy gap between the grill shell and the cover. This was a test fit without the filler. In the last shot you can see the perfect gap with the filler installed. Dam piece of foam was $89 but mine needed it. It actually took me longer to post this "How To" than it did to do the conversion! lol Mine is still in prime, all smoothed and ready for the basecoat/clearcoat Notes: I had an Issue with the left (drivers) side being a little low. Since there is no height adjustment... with the Re-Bar off, I took the (large) handle out of my floor jack, placed inside of the drivers side frame horn bracket and tweaked it up about 1/2 an inch. This was the key to getting the gap perfect. You will know if you need this adjustment when you test fit the grill... and the grill shell to bumper cover gap is off. This test must be done with the filler in place to see the actual finished/adjusted gap.