Hayden Automotive 3710 Rapid-Cool Thin-Line Electric Cooling Fan - High Performance Radiator Fan for Cars, Trucks & SUVs - Perfect for Engine Cooling & Overheating Prevention

I'm doing an eFan conversation on my '02 Chevy Tahoe. The Tahoe is factory wired for eFans but have the standard fan and clutch. In having to replace my water pump, decided to delve in to electric fans only for cooling the radiator. Found out quickly that the ECU needs to be flashed in order to recognize the eFans along with setting the fan on/off parameters. This requires an MDI tool which costs over $1k. In light of that, I have a Hayden 40 amp relay already installed that was pushing a 14" fan for the AC during summer in Cali.Well the relay kit says it is for two fans but, not a 14" and a 16" dual fan setup. The amp draw puts the relay to the test and running hot. So, I pulled the fuse on the smaller fan for now and had to reinstall the sock fan and clutch as I've got a road trip coming up again. I don't have any issues with the fan but I do recommend if you're installing this fan as a puller, not a pusher, don't forget to flip the fan blade on the motor or it will not scoop air properly. If your wiring is correct, then it will turn the right rotation, but the blade definitely needs flipped. It's easy to do. Harder if you realize it after you installed it and have to do it over. But it works great and moves a lot of air. I believe this one puts out 1500 CFM. With both fans, I meet the CFM requirements for my motor. But with only one fan, I had to go back to the stock version until I can get my ECU flashed. Main reason why I like old vehicles. They don't require a computer degree to work on