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Adding Electric Fans To 04 Burb

pastorscott

By pastorscott
in Ask A GM Technician

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pastorscott Enthusiast

pastorscott

Posted
Posted

I would like to replace my belt driven fan on my 04 burb with the 05 electric fan system. Whats envolved with such a change ? Would the 05 system bolt up to my o4

 

Scott

SilveradoGM Enthusiast

SilveradoGM

Posted
Posted

If it has the 34" rad then get a set of the e-fans , and wireing harness for a 05 1/2 ton drop in use pins 33 and 42 on the PCM , have PCM programed for fans .

If 27" use LS1 fans and I have a wireing harness diagram that will work for them as well , still use pin 33 and 42 on PCM .

Also need a 145 amp alternator and 1/2" longer belt .

4ws f 7 Enthusiast

4ws f 7

Posted
Posted
If it has the 34" rad then get a set of the e-fans , and wireing harness for a 05 1/2 ton drop in use pins 33 and 42 on the PCM , have PCM programed for fans .

If 27" use LS1 fans and I have a wireing harness diagram that will work for them as well , still use pin 33 and 42 on PCM .

Also need a 145 amp alternator and 1/2" longer belt .

 

I installed factory fans on my 05 1500 HD 6.0, with nelson fan relay harness, it only uses pin 42, is 33 for a/c signal? As nelson harness has you jump off a/c clutch which turns right fan on at high speed, I would rather

have both fans on at medium speed as it appears right fan is running at high speed going down highway and

I do not think this is the best way to run fans. If I had the option I would like to run fans to keep a/c high pressure in the 250 pound range is there anyway to do this?

Thanks for any info.

  • 3 weeks later...
Falconcbu2 Enthusiast

Falconcbu2

Posted
Posted
If it has the 34" rad then get a set of the e-fans , and wireing harness for a 05 1/2 ton drop in use pins 33 and 42 on the PCM , have PCM programed for fans .

If 27" use LS1 fans and I have a wireing harness diagram that will work for them as well , still use pin 33 and 42 on PCM .

Also need a 145 amp alternator and 1/2" longer belt .

 

I installed factory fans on my 05 1500 HD 6.0, with nelson fan relay harness, it only uses pin 42, is 33 for a/c signal? As nelson harness has you jump off a/c clutch which turns right fan on at high speed, I would rather

have both fans on at medium speed as it appears right fan is running at high speed going down highway and

I do not think this is the best way to run fans. If I had the option I would like to run fans to keep a/c high pressure in the 250 pound range is there anyway to do this?

Thanks for any info.

 

 

 

Check out SPAL USA

I been using this for about 9 months and works great. Fan comes on slow and then when you want full blast it will do it automatically or you can manually.. I got it off Ebay for 65 bucks and a relay box too.. let me know if you want me to find the SPAL dealer on Ebay for you..

SilveradoGM Enthusiast

SilveradoGM

Posted
Posted

These people are good also , Painless

Be careful with large fans and no fuses inline to the relays (need at least 40amp for fans and 10amp for power source) can cause major damage .

Sly Enthusiast

Sly

Posted
Posted
I would like to replace my belt driven fan on my 04 burb with the 05 electric fan system. Whats envolved with such a change ? Would the 05 system bolt up to my o4

 

Scott

 

I believe Flex a lite offers a kit.

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