6L80 6L90 8L90 Sure Cool System Upgrade STL010

I was running 200-220F hot summer temps (Florida) when I bought my 2018 5.3L Suburban high-mileage used in 2021. I did see a reduction into typical 190s temps, maybe breaking 200 on hot days with a lot of shifting, after doing a fluid evac and replacement. But this device is the REAL DEAL that dropped my temps. I can't get the thing to go over 170F NO MATTER WHAT I DO.Now, because the fluid is running through the cooler CONSTANTLY, it only gets anywhere above 155F if I'm sitting in traffic on a hot day and moving slowly without much air reaching the trans cooler. But as soon as I'm back up to speed, especially highway speeds, the temps start dropping and it's not unusual to cruise at just below 150F on the highway with good air flow.I am 100% certain I have just saved, or at least prolonged, the life of my torque converter. If you have a 6L80 this is as important a thing as you can do for it, and it only takes half an hour with extremely basic tools. Most complicated thing you need is snap-ring pliers that squeeze together (not the one that expands).This is every bit as important with these trucks as an AFM disabler to preserve your lifters, and, frankly, this is a more certain fix than the AFM disabler offers. GM has acknowledged that 190-220F is way too hot for your torque converter in a TSB release, but their "fix" is another thermostat that can freeze shut. This fix allows flow even if everything inside the device fails - the default is open flow to the cooler and worst case, in very cold climate in winter, you might need an extra couple minutes of morning warmup. In most of the country, you just leave it so that it's always open - the check-ball lets it clear out any overpressure from one side or the other so there's no harm that can occur.Just a BRILLIANT solution!!!BTW, my PHOTO shows the HIGHEST TEMP I have been able to reach since installing, and driving in warm weather - average daytime outdoor temp here is 80F. To get it up to 169F as shown in photo I had to run it at high revs in 1st gear in stop-and-go city traffic on a blistering day. That's the max I can get it up to now, and it takes a lot of trying! As soon as I hit the highway, or just 45mph in the city, that temp backs down into the 150s quickly.

Easy install, ease of mind on temps/ there is free ways to do this (flipping the pin) but I wanted a good product with good reviews so I didn’t have to worry about it. Took 20 mins max to install. Temps were hitting 200+, now I’ve only seen it hit 150. Also went ahead and changed my fluid since the old was burnt.

This fit in my 2015 Chevy Silverado 1500 LTZ Z71 Crew Cab short bed. I bought the truck used and my first 30 minute highway drive noticed my granny was running at 190 degrees. I put this in and the next 30 minute highway drive the transmission ran at 154 degrees. Definitely worth the investment to make the transmission run cooler!

This is a good product, I have a friend that used it. Unfortunately, I was unable to use it because the diverter on my truck was so corroded that it couldn’t be opened. There was a point of no return where my inner Ford guy came out and I used a splitting maul to open it, but that just solidified my resolve to use the PPE bolt on.

Dropped tempratures on my 2017 silverado by 40-50 degrees it was a easy install maybe 30 mins make sure you have some snap ring pliersFit:2017 silverado

A work on my Chevrolet Silverado 1500 2018 5.3 V8 6-speed.

Excelente

Ok