Recommended Transmission Cooler for 2006 GMC Yukon XL Denali

Updated 09/11/2020 | Published 07/30/2016

Products Featured in This Question

Derale Series 8000 Plate-Fin Transmission Cooler Kit w/Barb Inlets - Class IV - Efficient

(874)

$107.17

Derale Snap-In Radiator Adapter Fitting for GM

(274)

$16.69

Question:

Will this fit on a 2006 yukon denali xl I believe it has a 4L65e transmisson? I was looking to do one of these and a front mount trans cooler as well. My trans temp has reached 250 while towing up hill. Thanks

asked by: Joe

Expert Reply:

You are wise to install supplementary transmission cooling for your 2006 GMC Yukon XL since transmission fluid temperatures of 250-degrees Fahrenheit will otherwise certainly shorten its lifespan.

I suggest the Derale # D13504, a high-efficiency Class IV cooler, for your 6.0L. You will also need adapter fitting # D13035 to install it. A video is included to show you the process.

expert reply by: Adam R

Loai Q.

9/5/2020

Dear , kindly i own gmc 2006 yukon denali , and the transmission oil temperature reaches 250 F , and there is an external cooler radiator , so plz advice . best regards,

Jon G.

9/8/2020

So your transmission is reaching 250 and you have a supplemental cooler as well? It sounds like you might need to get your OEM and supplemental coolers checked out if they aren't able to keep your vehicle cool enough.

Loai Q.

9/8/2020

thanks , well the coolers are clean , and its not blocked internally , i mean the oil is circulated through the lines . kindly can i know if there is another thing to be checked for the coolers . thanks

Jon G.

9/11/2020

@LoaiQ I'm honestly not sure what else you'll need to check. You'll want to have someone who is familiar with transmissions to take a look at what's going on.