Thank you Zoz! Glad you have first hand knowledge. Could you please amplify/correct my following understandings:The fan is for automatics. I watched my Z51 manual get built - no fan behind the driver-side rear wheel, but the differential cooler was installed on the passenger side.
On your passenger side, you have both a radiator and a fan (for the Z-51 differential cooling);
On the driver side, you have a radiator but no fan. Or do I have it wrong, in that you have neither the radiator, nor the fan on the driver's side.
Thanks for helping us all learn!