Oil cooling setup for LS Jeep

[Rockwood]

PWM , like varying fan RPM based on temp? Does it get the signal from the computer or a temp sensor?

Yep. There are a number of ways to control them. Check out this thread:

Cooling Fan Tech

Compiling all the cooling tech into one thread. Not limited to just fans. Brushless: Brushless fans are taking over the OEM and aftermarket and they are starting to show up on the newer ULTRA4 builds. The most common right now is the brushless Spal fans and they are easy to tell from the motor...

irate4x4.com

I plan on running one of these:

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Will report back how it works.

So you bought a C7 fan but haven't looked into how to wire it ? Giving it power and ground won't turn it on.
It needs a speed command signal from the ECU or some sort of PWM signal generator.

He didn't buy one, I did.

 

[Bebop]

He didn't buy one, I did.

I'm all confused. My apologies.