I don't really know what he's going on about but he's got a hybrid and these are kinda weird. so what I've read the electric motors can create a lot of heat but there's no torque converter to build heat. so it seems they cooled the crap out of the fluid. there's 5/8in hard lines from the tranny to a front mount cooler, that about an inch thick. (and of course discontinued) it's the size the of the rad, half is tranny, half is hybrid inverter cooling.
they seem to have a temp stat of some kind at 167*. because that's the highest anyone ever sees. takes like 2h of stop and go traffic to get there. on my the daily loop, this one only sees about 140deg on a 100 plus deg day. I've seen it hit 167 when towing a car trailer, and very very long drives. but that's about it. they also have 3 speed cooling fans, where normal is 2. I don't know if the motors are more powerful, or if they just thought having a med speed saved fuel?
so again, these are just odd ball trucks. but they definitely run colder than what is considered normal for every tranny. in all the threads I've searched about these trucks, can't say I've found anyone say they have seen the 200deg that's normal for everything else. why that is? I don't know, but besides the tranny motors it's just clutch packs. seems they could have set the stat temp at anything they wanted. it has honestly made me me wonder if over cooling tranny fluid is a real world issue or just internet theory. gm definitely didn't care that these trucks can be driven around for their whole life and never see 180deg.
