LS3: Apparently I need three coolant sensors

[BonzoHansen]

Originally Posted by Chris442

If you want to run those three things, you'll need 3 senders. It's worth noting that the ECU is capable of PWM fan control; all Corvettes have had it since 05. I have this set up with an LS7 in a '68 Camaro. I also use an A/C pressure sensor for the computer to run the fans for that. Without going into too much detail, you'd need the PWM module from a Corvette to make it work and be able to set, or have somebody set, the computer to work it.

that's pretty wild I did not know that. Only corvettes get that?

[Chris442]

Originally Posted by BonzoHansen

that's pretty wild I did not know that. Only corvettes get that?

That's all I know about, for sure. I can say for certain that G8s, GTOs and new Camaros don't have it, though. Based on what's available in HPTuners, I'd guess it could be made to work with any of those computers, but I've never tried it.

It's been working great on the Camaro for the last 3 years and 15k+ for me. With the big Ron Davis and dual Spals, you rarely hear the fans run, since they're almost never at 100%.

[BonzoHansen]

Originally Posted by Chris442

That's all I know about, for sure. I can say for certain that G8s, GTOs and new Camaros don't have it, though. Based on what's available in HPTuners, I'd guess it could be made to work with any of those computers, but I've never tried it.

It's been working great on the Camaro for the last 3 years and 15k+ for me. With the big Ron Davis and dual Spals, you rarely hear the fans run, since they're almost never at 100%.

I have a DCC in my car and even with one of the fan motors having a bad bearing I still don't hear them. At idle on a 90* day they hover around 6-7 volts. I had no idea GM was using PWM.