2016 V6 canyon towing

[Dkilmer17]

I tow a 5000 pound travel trailor and the canyon does great! My question refers to tranny temp during grade climbing. The canyon will hit temps over 200! Some say this is normal but would a tranny cooler work in this situation?

[newdude]

Sounds normal to me. The warning message for TRANSMISSION HOT IDLE ENGINE" doesn't kick in until it sees temps up at 270F.

 

Even the 1500 trucks run up around 190 in normal driving due to the design of the transmission cooling. The big trucks have a "thermostat" on the transmission that the lines connect to. Once it reaches a certain temperature, it opens and sends fluid to the radiator then the aux cooler.

 

On the Colorado/Canyon, the transmission cooler is built into the AC condenser (top 1/4 of the condenser). It is direct to that cooler unlike Silverado which uses the radiator first, then has the aux cooler on the AC condenser top.