Review on Hayden Automotive 402 Ultra-Cool Tube and Fin Transmission Cooler: Optimal Heat Dissipation for Superior Transmission Performance by Noah Lewis

I installed this on a 2005 Trailblazer Ls EXT and while the installation is not really all that difficult there are a few things I would like to mention. First, the threads for the 390 adapter kit that is supposed to fit a Forerunner don't fit the heatsink at all. The plug that comes with the cooler does not fit the cooler at all. After about 12 hours of trying to assemble this setup, I found out through trial and error that the thread pitch is 9/16-18 and the hose end required is a 3/8 hose end. For countersunk installation you need a 9/16 male thread and a female thread. The transmission intercooler, which is held by the transmission lines, also floats on the pioneer. Do not press the radiator too hard, coolant may leak out. The pioneer transmission return line is a steel line at the bottom of the radiator on the driver's side. For inline installations, spend the extra money on an additional 3-5 feet of hose for each large underhood installation. I've decided to post everything I want to know beforehand here. The lines aren't connected yet but I've seen great reviews about it and a cooler will always help.