This is happening sporadically.

I will move the gear selector to D, take foot off of brake, and truck will not roll forward on it's own. I have to give it about 25% throttle to make it move, then it seems to do just fine.

I have only done this twice, as I do not want to tear anything up. If I put it back in park and try again, it seems not to happen again.

This is happening about 1 out of every 6-7 times that I get in and go.

Any thoughts on what is causing this? Thanks is advance.

2017 Ram 3500 DRW, crew cab, 4x4, 68RFE, 143K miles