I took this great grilling class one summer with my sister-in-law. It was super hot and we sweated like pigs, but we got to try tons of wonderful grilled recipes. So it was totally worth it. This is one of the recipes they shared, although I have tweaked it a bit.
Now mix your sauce. You'll need honey mustard, mayo or Miracle Whip (that is what I used), and honey.
You'll mix these three ingredients until well blended.
You'll want to set your grill on low. I have 3 burners, but I just turn on one. Place your ribs on the top rack and close the lid. Let them "cook" for 3-4 hours. I know it seems like a long time and a lot of propane, but believe me, you really won't use as much as you think.
And grill them. I usually will had a honey BBQ sauce on to the ribs while I grill them. You'll want to grill them about 4-6 minutes on each side.