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

[Brooklyndenali]

Hey iI have a 2001 denali and I want to do a E fan upgrade . I wanted to no how to go about that and what steps to take .

 

[Yukon04]

Hey iI have a 2001 denali and I want to do a E fan upgrade . I wanted to no how to go about that and what steps to take .

I just did this to mine and I am almost complete, I found the 05+ Efans at a local junkyard for 155.00 that was the easy part, next I need to get a harness and a tune, I have read you can pick up the harness from several vendors and they also offer the tune as well. Getting my fan off was tricky mines a 04 I used a pipe wrench and hammer and pb blaster gave it a few good smacks and it broke loose, I am currently running no fan due to the cold weather truck has not heated up over 210 even sitting at stop lights and drive threw BUT I dont suggest copying me.

 

[Brooklyndenali]

I just did this to mine and I am almost complete, I found the 05+ Efans at a local junkyard for 155.00 that was the easy part, next I need to get a harness and a tune, I have read you can pick up the harness from several vendors and they also offer the tune as well. Getting my fan off was tricky mines a 04 I used a pipe wrench and hammer and pb blaster gave it a few good smacks and it broke loose, I am currently running no fan due to the cold weather truck has not heated up over 210 even sitting at stop lights and drive threw BUT I dont suggest copying me.

What harness do u need ?

 

[DaUsedMCR]

Here's what I did. I had a tune already by BlackBear, so the E-fans function on the PCM was enabled. I ordered this fan:

http://www.amazon.com/Dorman-620-65...qid=1358025183&sr=8-1&keywords=Dorman+620-654

and this jumper harness from blackbear (first pic):

http://www.ls1fans.com/1999-2002_Trucks_SUV.php

Then you just follow the instructions on this thread:

http://www.tahoeyukonforum.com/forum/showthread.php?t=28336

I had some trouble, but you can post on here and people will help. all in all the most difficult part was getting the old fan off. i had to rent a tool from autozone. its a nice performance improvement and much better cooling!

 

[bottomline2000]

Here's what I did. I had a tune already by BlackBear, so the E-fans function on the PCM was enabled. I ordered this fan:

http://www.amazon.com/Dorman-620-65...qid=1358025183&sr=8-1&keywords=Dorman+620-654

and this jumper harness from blackbear (first pic):

http://www.ls1fans.com/1999-2002_Trucks_SUV.php

Then you just follow the instructions on this thread:

http://www.tahoeyukonforum.com/forum/showthread.php?t=28336

I had some trouble, but you can post on here and people will help. all in all the most difficult part was getting the old fan off. i had to rent a tool from autozone. its a nice performance improvement and much better cooling!

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#

 

[davidsSLT]

What is the benefit of the Efan upgrade? Obviously other than better cooling?

 

[DaUsedMCR]

the engine doesn't have to work more trying to rotate that heavy fan, so you get a bit of HP and MPG, but also (i would think) a bit longer engine life because it's not working as hard. you also get quite a bit more room in the engine bay, so its easier to work on.

 

[Brooklyndenali]

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#

and you bought that same fan?

 

[DaUsedMCR]

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

 

[bottomline2000]

and you bought that same fan?

I paid $250 for some junkyard pullouts from an 05 yukon. I found out later the factory dorman fans could be had for $140 new. 07+ fan assembly fits, just different blade count. .

Sent from my marble slab!