Transmission cooling

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🔧Performance Upgrades 🔧

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Hey all, I drive a 2009 GMC Sierra 1500 WT with the 4.3L V6. I go on a lot of trips and up mountains. My transmission constantly raises to 220 Fahrenheit. I don’t have the strongest engine or transmission of course.

I tried installing the tru cool auxiliary cooler for my transmission but it kept leaking and had a hose blow off when driving on the highway. I also replaced the radiator thinking the airflow would be better but no luck. I’m now looking at just a fan in front of the radiator with a switch I can turn on when the transmission gets to 210. Anyone have any suggestions or thoughts about how I can cool the tranny down?

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djmckh

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Posted: 4 months ago
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External URL: reddit.com/r/gmcsierra/c...