Do I need a transmission cooler on a 2012 Yukon Denali?

[Kurt Johnson]

I'll be towing a 6000lb camper this fall in Georgia about 90 minutes at a time. Does the stock Yukon Denali have sufficient transmission cooling?

 

[sumo]

Never hurts to have extra cooling.

 

[Jason_S]

I haven't bothered to look at instructions for a trans cooler in a very long time, but make sure that you get it installed correctly.

You will want line from the trans to go into the cooler, then into the radiator. So your flow path will be something like Trans >> Cooler >> Radiator >> Trans. This will keep your trans fluid from getting too cool.

-You will need to drain your trans fluid and blow out the existing cooler lines with air.
-A tubing cutter and a flare kit will make the installation the cleanest and help keep you from having issues down/on the road.
-Use the flare tool to make (I forget the name of the type of flare) flares on the ends of the metal lines where you will attach any hoses. They will keep the hoses from working off and if clamped right, they will help make a better seal.
-Use another hose that is split ad a vibration and sharp edge protector. Usually heater hose works great.

If you are already plumbed for an external trans cooler, a larger one should be almost plug and play. You could potentially stay factory and find one off of a similar year 2500 or 3500 truck.

 

[wesyder]

I'll be towing a 6000lb camper this fall in Georgia about 90 minutes at a time. Does the stock Yukon Denali have sufficient transmission cooling?

I recommend an upgraded cooler, I use a tru cool 40k with the EAD performance install kit on my escalade

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[JennaBear]

I towed with both my 2010 Denali and my 2013 Denali XL, never an issue and never had upgraded coolers. That being said, doesn't hurt, so long as it is a good quality unit.

 

[Kurt Johnson]

Thank you for your help. Does a 2012 Yukon Denali not come with some sort of transmission cooler. The manual says the vehicle has an 8000lb towing capacity. Is that only if the vehicle is towing in the salt flats?

 

[02Lightning]

Thank you for your help. Does a 2012 Yukon Denali not come with some sort of transmission cooler. The manual says the vehicle has an 8000lb towing capacity. Is that only if the vehicle is towing in the salt flats?

Yes, it comes with a separate transmission cooler. I just replaced a leaky line on mine. Just thinking about this, and I didn’t really pay too much attention. But the line I replaced went from my radiator to the transmission cooler. So, I’m thinking the system is redundant, going from the radiator transmission cooler to another external cooler.

 

[Kurt Johnson]

I checked under the hood and... Yes.... It has a transmission cooler and the display on the instrument panel shows the transmission fluid temperature. Home run!

 

[mrpep]

You should have a temp gage if not install one and see what temps you get. If your in the low to mid 200s then why bother....




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[02Lightning]

I thought I read somewhere on here, that if the transmission overheats it will show a message showing you that.