MonteCarlo31

I have a 2006 Silverado Z71 that is the workhorse, I need to swap the E fans out for a clutch fan from a 03 Silverado SS (34" fan shroud) but what is needed in the PCM department? Can I just unplug and seal the wires or will that trip a fault code? Do I need a PCM reprogram? I have a Predator tune that allows for E fan temps to be changed. That only leave the PCM trigger for the A/C but the clutch fan will always be pulling air so I shouldn't need that either. Correct me if I'm wrong.


Thanks

WillPewter2000

iTrader: (1)

Any reason why?

thunder550

iTrader: (70)

You shouldn't need to do anything with the tune. Just pull the e-fans out and install a clutch fan and shroud and be on your way. I have a shroud for a 27" radiator in the garage if you need one.

MonteCarlo31

My reason is cooling or lack there of. I currently run very hot when towing or in deep mud, I'm sure 4.10s will help reduce the stress on the engine as well but I find a clutch driven fan to be more reliable. I'll be running a 10" fan on the front side as a pusher for the A/C and Trans cooler. The clutch fan seems to keep the trucks right at 200-202 degrees no matter the traffic, heat or load.

Edit: also Thunder, I believe with the 06 fans there is a 34" radiator which, according to your posts I believe I need a 03 SS fan shroud and clutch assembly. Is this true?

Whippled 496

iTrader: (4)

can you explain what you mean by a "pusher"?

MonteCarlo31

pusher means the fan is mounted between the a/c/radiator and the bumper. This will allow the electric fan to push some air over the a/c coils and keep the a/c cold, it will also pull air through the trans cooler. A prime example of this is mercedes benz, they often run a clutch driven fan (that disengages at high rpms) as well a second and sometimes 3rd fan that is electric and pushes air when the clutch isn't enough (mostly at idle). Your clutch driven fan is a puller (as well as anything else mounted behind the radiator).

Nick™

iTrader: (2)

you can use the clutch assembly off of any truck, they are all the same. the shroud may be different, trucks with the larger radiator from the factory were the HD's, Silverado SS and Denali (I'm assuming this one).

the fan will be in front of the radiator pushing air into the radiator, rather than pulling it through

RabidStreetRacer

iTrader: (1)

I have a clutch fan off of my 2002 Silverado 1500 that i would swap you.

thunder550

iTrader: (70)

If you had factory e-fans then yes, you have a 34" radiator and if your truck is a half ton then the 03 SS shroud should work correctly.

MonteCarlo31

Great news, thanks thunder. On a side note didn't you used to live in Maryland.