RPMs rise/fall with slow excelleration when going uphill

I have an 2013 5.7 crew cab Rock Warrior. I have 86,000 miles on it. Over the last couple weeks when leaving home (summer time) as I slowly excellerate up a mild incline my trunk will shift into 2nd gear OK but as the RPM increase somewhere between 3000 and 4000 and normally it would shift into 3rd gear the RPMs keep increasing until the truck and RPMs start "lurching". It feels as though I am pumping the gas. I dont remember it doing this and seems like it does it more when engine isn't warmed up totally. Only happens with slower than normal excellerations and specifically if there is a slight incline. Any suggestions would be appreciated.

I did try cleaning my cold air intake sensor and this did not work.