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Original transmission with 200k+ miles so i wanted extra insurance while towing 7k lbs. Im an outdoorsman so it sees mud, snow, heat, dirt/dust, and towing.
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I own a 2001 chevy suburban 4x4 and i actually use it the way it was designed. Id like to say that when i heard about this transmission cooler i was all onboard. Oregon Performance was prompt and sent a follow up survey. Remedies General Motors original shortcomings in transmission cooling. Quality aluminum plate cooler made in Canada. Check these connections every so often as tranny fluid will decay these hoses and if they ever leak you could loose all your fluid with no indication until your transmission is ruined. they may save these fabrication steps? Hoses are rubber and use hose clamps to secure to barbed fittings that are NPT and thread into cooler. Then use a strong zip-tie to reattach the power steering cooler to the said frame. Also, you will need to cut off the welded tab holding the power steering cooler to the frame that holds the hood latch and tranny cooler. I fabricated two of the supplied metal tabs into a crude bracket. You then have to find a way to attach your outside air temperature sensor. Drill it to match lower holes on this new cooler and then use the supplied self tapping bolts. Had to flip existing transmission cooler bracket upside down and notch ends. Needed a tubing cutter to cleanly cut existing steel transmission cooler lines for attaching rubber hoses to have sweeping curves. Only drawback is installation is not plug and play for 2001 Chevy 2500 HD. I haven't tried winter driving at -20 degree Fahrenheit yet, but hope the thermostat bypass works. Prior to install have pulled about 14,000 lbs and believe I could better do so now and not exceed 210-220 degrees Fahrenheit. Averages about 140 degrees Fahrenheit with no load, on 75 degree days at 3300 feet. Previously 230 degrees Fahrenheit down to 169. Lowered my trans temp while towing 6000 lbs up hills on 80 degree Fahrenheit days at 3300 feet above sea level. That one has the inlet and outlet on the side instead of bottom, so plumbing it to your transmission will be a lot simpler.Īrrived promptly. I would suggest to any other LS4 vehicle owners, that if you don't live in a place that often gets over 100 degrees outside, that you save yourself some trouble and get a Tru-Cool 30k instead. It was entirely due to the inlet and outlet being on the bottom. The only downside to the 40k is that due to its huge size, the way I mounted it required me to modify some plastic on my car I wish I didn't have to modify. This cooler in standalone configuration certainly solves that problem for me. Even on a cold day, it'll get much hotter than 180 degrees on a long drive. These GXPs tend to run very hot without modification, reaching up to 220 degrees on a 30 minute drive on a very hot day. Any temperature under 200 degrees is ideal. It's currently June, and the highest temperature I have seen my transmission fluid be is 163 degrees on a 98 degree day. I live in Texas and our outside temperature range is typically 30 to 110 degrees, more or less.
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HOW TO INSTALL TRANSMISSION COOLER ON SILVERADO HOW TO
I created a website with a guide on how to install one of these coolers. Secondly, this cooler has worked great in standalone configuration on my 2006 Pontiac Grand Prix GXP. They repackaged the 40k cooler in a larger box and took the hose and mounting equipment out of the original box to prevent the mounting equipment from damaging the cooler. (Purchase Part number LNG-4739 for this same cooler with the thermal-bypass.)įirst of all, I am extremely happy with OPT. Upgraded line and fittings would need to be purchased separately.Īll True-Cool coolers come with a manufacturer's limited lifetime warranty. If you want to install this cooler with upgraded hose and fittings, the 5/8”-18 threads in the cooler would allow you to convert over to AN style to use with braided or Socketless hose.
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If you want to extend the life of your transmission and avoid a premature, costly rebuild, this is very cheap insurance.Īll parts and instructions are included to mount and plumb this cooler. Heat is what kills an automatic transmission. This is the ultimate cooler for heavy towing and is a must for heavy duty applications, including racing. Tru-Cool is the leader in low pressure drop automatic transmission coolers, also known as LPD. The fittings on this cooler are 3/8" inverted flare. Tru-Cool Max transmission cooler by Long Manufacturing