Transmission temperature 10speed with 3.0 LZO Duramax

[repairman54]

23 hours ago, Grover67 said:

repairman54 do you have the Max Tow package?

 

-grover67

No just the standard tow package in a Z71

[LuvGinger]

Yes. Those are normal Temps.

 

I installed a PPE Trans Cooler, PPE Thermal Bypass, and PPE larger capacity Transmission Pan. Best thing I ever did. Transmission runs 130 degrees and never really deviates from that. When I stop cools a few degrees immediately.

 

[MrMagloo]

Just wondering out loud, at what point is the trans temp too cool?  I've read a lot of varying opinions, some suggesting you need to get at least into the 170-180 range on these new 10 speeds?  I've never heard of a trans running at a normal operating temp of 130.

[MrMagloo]

delete

Edited September 22, 2023 by MrMagloo
Dupe

[mjonesjr84]

49 minutes ago, MrMagloo said:

Just wondering out loud, at what point is the trans temp too cool?  I've read a lot of varying opinions, some suggesting you need to get at least into the 170-180 range on these new 10 speeds?  I've never heard of a trans running at a normal operating temp of 130.

I had a 2023 Silverado with the 5.3 and 10L80 10-speed for a rental earlier this year. The transmission temperature stayed between 130-140 at all times. It is the same 10L80 that is in the 3.0 Duramax trucks. 

 

I will keep my PPE cooler and PPE bypass valve in. 190+ temperatures are not good for a transmission.

[MrMagloo]

It's an interesting discussion as this vehicle is definitely running higher than what my past trucks used to run.  I've actually driven a number of 2021's through 2023's and they all ran in the 185 to 195 range. This seems to be the factory target.  Definitely not a range I'm comfortable with. 

Edited September 20, 2023 by MrMagloo