11 6.7 trans running hot

[jrex2506]

has 110k and has been ******d. returned truck to stock while I pulled a skid steer. had about 20k behind me and noticed the temp climbing toward the yellow. it got so hot at one point had to stop and let it cool. even after I was unloaded with just gooseneck it still ran really warm. I just had fluid changed. it hasn't slipped just running way to hot. any ideas?

sent while on on patrol.

 

[sootie]

check the coolant level in the secondary system

 

[jrex2506]

where is that located?

sent while on on patrol.

 

[sootie]

it is the small reservoir just in front of the air filter-a little closer to the center of the truck.