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Description
Fits
Year
Make
Engine
2017-2019
Duramax
6.6L
2014-2018
GMC/Chevrolet 1500
4.3L/ 5.3L/ 6.2L
2015-2020
Suburban/ Tahoe/ Yukon
5.3L/ 6.2/l
2015
Escalade
6.2L
Your Duramax is a powerhouse that you may want to modify, or throw a big trailer behind and make it work for you. Both of these are great, but you don't want that allision to overheat as that engine works. The stock cooler setup that these trucks come with sometimes fails and causes higher temperatures that you don't want to see, this part is designed to prevent that.
The stock thermostatic bypass for warming up the Allison quickly in cold weather conditions is a good idea in principle, but in practice, we've seen the valve fail to force trans fluid around the cooler in warm weather conditions that cause dangerous fluid temperatures for built and stock transmissions alike. We've been running this design on our shop development trucks and with our built transmissions successfully and are now making them available for purchase separately due to popular demand.
Part Number: WCF100469
Features
Up to 50° transmission temperature drops seen in stock trucks
Greater flow through the cooler than the OEM transmission thermostat
Recommended for high-temperature environments or high load situations