Upgrade trans cooler ?

Cheechio19 · Jul 2, 2021

I have a 13 Sierra Denali with the 6L80 trans.

While towing my boat I routinely get my trans temp into the 200-210 range.
Should I upgrade my trans cooler to help with this ?
Or is there something else that I can do ?
Thanks

Cheech

shakenfake · Jul 2, 2021

Upgrade trans cooler make sure fluid looks good too.

Tru cool 40k is the best cooler there is out there pretty much

RedSLEd · Jul 2, 2021

How many miles are on it? Has the trans fluid/filter ever been changed?

Spectreniner · Jul 2, 2021

200-210 is very normal

Cheechio19 · Jul 2, 2021

GBSierraSLE said:
How many miles are on it? Has the trans fluid/filter ever been changed?

148 kilometres
Fluid and filter done at 120

shakenfake · Jul 2, 2021

Spectreniner said:
200-210 is very normal

Seconded

jay smith · Jul 2, 2021

my 09 has the 4l60 transmission and it came with a pretty underwhelming cooler. i installed a pretty big one and noticed a difference. also keep your ac on it makes the electric radiator fans run at lower speeds and that also helps cool the trans as well.

Walkers · Jul 3, 2021

You could just bring, err, him along for the trip.

Oh, wait that's a cooler tranny, not a tranny cooler, my bad

silentbravo · Jul 3, 2021

lol ^

200-210F is alright, if it was routinely above 220-230F then I would say you need some auxiliary cooling.

CKNSLS · Jul 3, 2021

Major misinformation on this thread-

Read this instead-

Transmission temp to hot?

shakenfake · Jul 4, 2021

lol who can even get their tranny to 285 degrees

Upgrade trans cooler ?

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