PWM cooling fan(s) control using ECM

[samckitt]

Originally Posted by andrewb70

Scot,

Is this top secret information? LOL

Andrew

For now it is. :-)

[samckitt]

Connector parts showed up the other day, the wire seals will show up tomorrow.

Power terminals:


PWM signal terminals:


Connector body:




I have 5 complete sets. When the seals get here I will also have ECM terminals. If you have the GMPP controller kit & want to add the Maxi fuse/breaker in the fuse box to power the fan, I can get the terminal for that fusebox as well.

I spent a ton of time trying to find this connector. If you have searched it you know they aren't available from GM.

When the seals get here I will have everything needed (except the wire) to add this fan module. $50 shipped to anywhere in the US.

[Lous69]

As the original poster, I've been very proud of this thread and all the sharing that has taken place within it. Everyone who has contributed to it spent lots of time researching and learning what they shared. We all spent lots of money on the things that did not work before posting what did, we made lots of mistakes and tried to inform others so they would not have to make the same ones. For instance, the kind of advice Dave Mikels' has offered up in this thread is the result of YEARS of experience. That's what has always been so cool about these forums. Thank you to everyone who has freely contributed what you have learned in this thread.

[parsonsj]

Well put.

I'm putting all this information into direct use just over the past few days as my LS9 69 Camaro project has finally gotten out of paint jail.

I appreciate all the information and hard work. This has been a real highlight of a thread for the past couple of years!

Not one of us could do this sort of stuff by ourselves.

[andrewb70]

Information wants to be free. Set it free!

Andrew

[parsonsj]

In a related question, I'm using the stock ZR1 intercooler (charge coolant) pump and it has a two prong connector (just 12v power and ground). The GMPP LS9 harness has three wires (which are 12V, PWM signal -- J3-42 lt. blue/white, and ground)

The stock ZR1 runs without a PWM-controlled intercooler pump, and the GMPP LS9 harness has a PWM connector for the coolant pump. Why are ZR1 LS9 and the GMPP crate LS9 wired differently in this case?

Any insight or help is much appreciated!

[samckitt]

Originally Posted by samckitt

Connector parts showed up the other day, the wire seals will show up tomorrow.

Power terminals:


PWM signal terminals:


Connector body:




I have 5 complete sets. When the seals get here I will also have ECM terminals. If you have the GMPP controller kit & want to add the Maxi fuse/breaker in the fuse box to power the fan, I can get the terminal for that fusebox as well.

I spent a ton of time trying to find this connector. If you have searched it you know they aren't available from GM.

When the seals get here I will have everything needed (except the wire) to add this fan module. $50 shipped to anywhere in the US.

Wire seals finally showed up.



Now I have everything.

[parsonsj]

I've just finished wiring my customer's fans. I split the PWM signal (blue wire in, 2 green wires out) at the MetriPack 280 connector, and grounded the controllers to the radiator core support (just below the connector). The fan power and ground signals go down and connect to the fans below.

[waynieZ]

It looks nice John.

[erick_e]

I just registered after reading this entire thread.

I'm trying to figure out how to wire up a SPAL brushless fan using the factory C6 PWM controller.

Essentially I just want to replace the OEM fan with a more efficient brushless fan and use the PWM controller and ECU to control it.

The new fan has a PWM controller input, but I'm not sure if I can wire it directly to the PWM wire on the fan controller.