Thanks for the speedy responses gentlemen.
It sounds like a simple fix. Jerry, believe it or not, I notice this issue while I was on soft sand driving normal. I was not getting stuck or digging myself into the sand. I could have cruised the beach on 2wd but I only engaged into 4hi since I didn't want to put stress on the motor revving at about 4.5-5k when it would be more ideal to just shift into 4hi and cruise at a lower RPM.
After I engage it back into 2wd, I noticed the temp will drop back to 210.