In fact, there is plenty of aftermarket support for the Tru Cool Max 40k in terms of installation kits which help to make for a very simple installation. This cooler is widely used on a number of trucks and SUV’s, and is very commonly installed on Silverados and Sierras making it a great upgrade over your stock cooler. Note: Looking for transmission coolers for a Duramax Diesel GM truck? Check out our Duramax Transmission Cooler Guide.Īs mentioned before on Transmission Cooler Guide, the Tru Cool 40k is one of the top rated heavy duty transmission coolers. Here are our choices for the best transmission coolers for Silverados and Sierras. Looking for a GMC Sierra or Chevy Silverado transmission cooler upgrade to help lower transmission temperatures in your pickup truck? You have a number of options for getting the job done. Whether you drive your truck daily to work, use it to tow haul from time to time, or need to drive your crew to job sites, it is always recommended to install a transmission cooler to lower transmission fluid temperatures and prolong the life of your Silverado or Sierra’s transmission and keep you on the road. and installing a transmission cooler on your truck is very simple for the average DIY enthusiast in your driveway in only a few hours. The Silverado and Sierra have a number of transmission cooler upgrade options. One area that is simple to upgrade is with transmission cooling. Since this platform is widely known for having a large aftermarket and being easily modifiable, you have plenty of options when it comes to improving your truck’s stock components. However, as mentioned before, on the 2001-2005 models the heat exchanger seems a bit undersized, and in most cases, can't keep up with cooling the transmission while under a heavy load and in high ambient temperatures.The GM full size trucks are great in terms of maintenance as well as being easily fixed, which is why many older trucks are still on the road today. One of the best ways to keep your transmission operating at the optimal temperature, other than being able to control the weather, is by way of a transmission cooler, another useful feature that GM included to keep your Silverado and Sierra running and towing efficiently. To put it simply, the automatic transmission mated to your Duramax is a complex piece of machinery that needs some extra help to keep it cool. This might seem like a practical way to keep your transmission intact, but it could end a track day before it even starts if you spend most of your time on the shoulder. As a final safeguard, most manufacturers, including GM, incorporate what is commonly referred to as, "Limp Mode," which limits your gearing, allowing you to pull over and cool down. Since the Duramax trucks are designed for heavy lifting, GM specifically engineered their ATF to operate at temperatures up to 200☏. As part of the lubrication cycle, fluid is sent through the lines to the heat exchanger for extra cooling before making sure all your gear changes are as smooth as possible. For starters, this is the reason for the cooler in the first place. This is something that all car manufacturers take into consideration during the engineering process, and equip safeguards for what is effectively the second most important component on your vehicle. Most major brands manufacture their automatic transmission fluids up to the standards of the GM Dexron blend as well as other manufacturer's recommended tolerances. However, the heat oxidizes the fluid, and as the temperature increases, less lubrication reaches the hundreds of components inside the housing, which will lead to burnt ATF, or worst case, a totaled transmission. Remember all of that slipping, pressing, and synchronization? The fluid in your transmission is a lubricant which makes sure everything can move smoothly. While most automatic transmission fluid, or ATF, is rated as being able to handle temperatures over 300☏, running at that temperature can shorten the fluid's lifespan to just a few hundred miles. Think of it like your transmission having a fever. Much like when your internal temperature spikes, as the operating temperature of your Allison transmission begins to increase, problems begin to surface. To put it simply, your ATF keeps the hundreds of moving parts lubricated, and extreme heat can diminish the lubrication properties of the fluid, hence the importance of keep it within the recommended temperature parameters. Labeled are the main culprits for the heat produced inside of your transmission housing.
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