Originally Posted By: SteveSRT8
Originally Posted By: Trav
I checked out a 2002 Denali AWD with the L460E, this one has a towing package, deep pan and an additional OEM cooler.
Temp 170 deg on the scan tool.
A 2001 Suburban 4WD same transmission, no tow package, shallow pan and only radiator cooler.
Same distance 188 deg on scan tool, ambient 79f.
No comment just some information to dissect.
This is great info. Note that the vehicle cooling the fluid only through the radiator was much hotter, I'm sure that's due to high coolant temps.
We used to call radiator trans coolers "trans warmers" because they tend to get the fluid up to the same temp as the coolant.
Don't write the radiator cooler off so fast. It will haul off a lot of heat. On a 100 degree day, it may haul off more heat than the oil to air cooler. I learned that if you eliminate the radiator cooler, you'll have to get a VERY large oil to air cooler.