I have a 01 denali and want to do the E fan upgrade

[96twodoorTahoe]

I have E-fans on my truck. Not only does it stay below running temp, I did my water pump in about 15 mins. No more having to pull the fan makes it worth it for me.

 

[Brooklyndenali]

yes, Dorman 620-654, but make sure you have the larger radiator: 56 x 21 x 10.5 inches, according to amazon, is the fan size, so you should make sure your radiator is 56 x 21 inches

ok thanks will chec it ASAP

 

[Danielgreig]

what he said. Don't pay more for junkyard pull outs when you can get new for $140. I did the same thing. Only difference is I used the wiring harness from Nelson Performance. Much cleaner wire loom and works great. I have my relays mounted to my pcm cover so the harness is the right length.

http://nelsonperformance.com/products.htm#

So, with the above harness, do you still need to get a tune to get it to work or can I add to my otherwise more or less stock Tahoe and still see an improvement?

 

[chizwizdiz]

So, with the above harness, do you still need to get a tune to get it to work or can I add to my otherwise more or less stock Tahoe and still see an improvement?

You still need a tune to tell the computer to turn on the fans.