2016 Sierra trans temps...........
#11
TECH Fanatic
I can't remember who but he is 14+ that gave a play by play on what to do to lower trans temps. No cooler needed. I have a 40k as well but it wouldn't fit with the he of the Whip. He tells how to easily and simply mod the 6spd to bring it down to 140-160 as I recall. Btw my temps are the same. Just search it.
Here is the thread you where talking about. I'm going to give it a try since I pull a pretty big wakeboat in the summer.
https://www.gm-trucks.com/forums/top...oreafter-mods/
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Mark Johnson (03-07-2019)
#12
TECH Junkie
iTrader: (40)
190-200 is normal on these trucks once it gets up to full temp.
Putting a cooler on it wont make it run cooler because of the thermostat, that's what thermostats do is regulate temps. And when temps are low the thermostat bypasses the cooler anyway and just recirculates the fluid right back into the trans.
If you want cooler temps pull the thermostat out. But I would just leave it alone.
I also see a max of around 198 or so on my truck. And that's fine. 230+ annoys me and I haven't seen near that yet on this truck
Putting a cooler on it wont make it run cooler because of the thermostat, that's what thermostats do is regulate temps. And when temps are low the thermostat bypasses the cooler anyway and just recirculates the fluid right back into the trans.
If you want cooler temps pull the thermostat out. But I would just leave it alone.
I also see a max of around 198 or so on my truck. And that's fine. 230+ annoys me and I haven't seen near that yet on this truck
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