Pbeau84

Spoke to one dealer and said not an issue until 260-270 and that its normal

I have a '23 Silverado RST 3.0. Normal Trans temps are 180-205, really varies a lot sometime while towing I'm below 180 and sometimes driving with no load I'm 200, weird. But I noticed when I'm parked, either idle or in park the temps can jump pretty quick. I was in a parking lot and just wanted to see where it would level off and got to almost 230 before I started driving again. Anyone know if this is normal? Ambient temp was only 59 degrees so not hot. It just didn't see like the temp was going to level off, just kept creeping. Any help appreciated.