[Karl Rich]

Originally Posted by buds56

IMO the best thing you can do to get the temp down in the trans is to install a bypass kit in the trans thermostat.
Until the fluid temp reaches 192 deg. no fluid goes through the cooler.until this thermostat opens.

There is quite alot on the internet about this and the 6l80, I think it's worth researching.
Good Luck

Did this mod to my 2017 went from running 190 to 150 in hot South Florida summer. Around $50.00 for part, total of 30 minutes to change it out.

[Shiny]

Bing search says GM released a lower-temp valve... interesting! I'll call the dealer back and talk to them about this:

https://www.gmtruckclub.com/threads/...d%20style.%209

[Karl Rich]

Originally Posted by Shiny

Bing search says GM released a lower-temp valve... interesting! I'll call the dealer back and talk to them about this:

https://www.gmtruckclub.com/threads/...d%20style.%209

I used the Superior Solutions Value, picked it up at an local transmission parts retailer.

[Shiny]

I have a call back to dealer to find out if my truck falls in the scope of this service bulletin:

https://static.nhtsa.gov/odi/tsbs/20...07911-9999.pdf

I don't remember him mentioning this but perhaps they are well aware and have done more than a few....

[Shiny]

Originally Posted by Karl Rich

I used the Superior Solutions Value, picked it up at an local transmission parts retailer.

Thanks Karl!

Like I said, I have a call into dealer to see if they are selling me a lower-temp valve.

If it's a bolt-in and accessible, I may also consider doing this myself.

More to learn...

[Bills Auto Works]

Would one of you gentlemen who have the "Shutters" be able to post a picture of them? I may add them to my older trucks with a mechanical cable type control for those sub zero trips where my Mishimoto Cooler keeps the fluid too cold!

God Bless
Bill
https://www.jalopyjournal.com/forum/...closed.614419/

[Shiny]

Originally Posted by Bills Auto Works

Would one of you gentlemen who have the "Shutters" be able to post a picture of them? I may add them to my older trucks with a mechanical cable type control for those sub zero trips where my Mishimoto Cooler keeps the fluid too cold!

God Bless
Bill..

This is the motorized assembly for my 2018 - for sale on eBay and I'm sure lots of sources. They appear to be available for earlier generations also.

I wish I had your "too cool" problem!



Link to eBay posting:

https://www.ebay.com/itm/For-2017-20...-/392883175920

[Bills Auto Works]

Originally Posted by Shiny

This is the motorized assembly for my 2018 - for sale on eBay and I'm sure lots of sources. They appear to be available for earlier generations also.

I wish I had your "too cool" problem!



Link to eBay posting:

https://www.ebay.com/itm/For-2017-20...-/392883175920

Thank You Sir,

I am embarrassed to say...I never thought to look on Ebay! LOL

That looks to be an easy install on an older model, although I am getting closer to retirement from the road after 40 years. I have to admit I was quite shocked when after installing the Mishimotos on both trucks, I had trouble keeping the temp hot enough to trigger the trans converter when the outside temp was below 10 degrees!

God Bless
Bill
https://www.jalopyjournal.com/forum/...closed.614419/

[Karl Rich]

[IMG]

[/IMG]

[QUOTE=Bills Auto Works;6369100]Would one of you gentlemen who have the "Shutters" be able to post a picture of them? I may add them to my older trucks with a mechanical cable type control for those sub zero trips where my Mishimoto Cooler keeps the fluid too cold!

God Bless
Bill
https://www.jalopyjournal.com/forum/...closed.614419/[/