Fan relay control on 2006 1500 truck ECM

[fishlips]

I installed a stock 2006 5.3, 4L60E and the factory ECM in a 66 El Camino. Does anyone know if this ECM has fan control relay outputs? On my ECM schematics I can not identify an output that was intended to control the fans. I know some trucks use a water pump driven fan. Anybody familiar with this?

Thanks!

[retsell]

I installed a stock 2006 5.3, 4L60E and the factory ECM in a 66 El Camino. Does anyone know if this ECM has fan control relay outputs? On my ECM schematics I can not identify an output that was intended to control the fans. I know some trucks use a water pump driven fan. Anybody familiar with this?

Thanks!

The 06 uses electric fans. The ECM should have an output for fan control.

[LowePerf]

Try connector C1 pin 42 (dark green)for the low speed fan and C2 pin 33 (dark blue)for the high speed fan.
-John

[fishlips]

Thanks folks! I will give it a try.

[fishlips]

Thanks again guys. Hooked them up and can now control the fans! Much better!!