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06-29-2007, 04:29 PM
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Hummer Veteran
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Join Date: Nov 2006
Location: Louisiana / DFW
Posts: 80
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Re: 2500HD Fan Part Numbers
Quote:
Originally Posted by Humdingah
Thanks guys...I did several searches and couldn't find any part numbers.
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Me, Too. 
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06-30-2007, 11:51 AM
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Hummer Authority
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Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
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Re: 2500HD Fan Part Numbers
You just plug Nelson harness up to work.
There is one wire that instructions tell you what connector to hook to so you can have your PCM control the on and off temps for fan. You do have to go to a tuner shop that can hook up and turn on that function. It is there but, of course set in the off position. Most any turner shop should be able to do that for you for minimal fee. I think some of the newer handheld progrmers have the ability to turn fan control on.
Another solution is to hook the wire into a connector that turns fans on only when AC is running. When you get up above 25 mph the forced wind will cool the H2 if not using it hard. You can use this setup until you get to a shop or find someone with a newer handheld to set up fan control properly.
You could use an aftermarket unit to run electric fans but, I personally have not had good experience with them. Using the factory fan control bypass you can cut of fan by turning off the AC switch. I would not want to use this long but, not afraid to use it till i get a unit to turn that control on in the PCM.
TAZ
__________________
05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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06-30-2007, 01:54 PM
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Hummer Professional
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Join Date: Jul 2005
Location: New Jersey
Posts: 255
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Re: 2500HD Fan Part Numbers
Why is it that you guys are trading out the clutch fan?
Does this take some strain off the engine?
Helps cool easier?
Would like to know more, to decide if it is something I would like to do....
Thanks Guys!
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07-01-2007, 07:01 AM
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Hummer Authority
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Join Date: Nov 2004
Location: Little Rock, Arkansas
Posts: 1,784
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Re: 2500HD Fan Part Numbers
Better cooling but, more importantly gain in HP. Rule of thumb is 15 to 18 HP with electric fans. Plus the electric fans can help control how much temp you want to run during different times of the year. Colder, set fans to come on at 220 and your t-stat opens faster heater works quicker. In heat, set it for 180 AC works quicker.
Now all this does not even start to cover the benefit to the engines length of service and dependability.
TAZ
__________________
05 H2 SUV cus. paint, Magnuson SC 6/12lb boost, cowl hood scoop, 12" dash touchscreen, GM elec. fans, HPTuners.com tuning soft., Dynatech headers dual catback exhaust Jet Hot chrome front to back Flowmaster Super 40's, Diamo 8 Karat rims & 325X60-20" Toyo, 4 OEM Captain seats Katzkins leather, rear console computer inside running all AV/NAV etc., Infinity component system 3 amps Tsunami Caps, rear flip down 12" monitor, headrest monitors, overhead console boost, fuel pressure, & A/F ratio gauges
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07-01-2007, 01:06 PM
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Hummer Professional
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Join Date: Jul 2005
Location: New Jersey
Posts: 255
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Re: 2500HD Fan Part Numbers
Quote:
Originally Posted by HUMMERcustoms.com/TAZ
Better cooling but, more importantly gain in HP. Rule of thumb is 15 to 18 HP with electric fans. Plus the electric fans can help control how much temp you want to run during different times of the year. Colder, set fans to come on at 220 and your t-stat opens faster heater works quicker. In heat, set it for 180 AC works quicker.
Now all this does not even start to cover the benefit to the engines length of service and dependability.
TAZ
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Thanks for the confirmation - I will be looking into this - no doubt.
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07-01-2007, 01:33 PM
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Hummer Professional
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Join Date: Jul 2005
Location: New Jersey
Posts: 255
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Re: 2500HD Fan Part Numbers
I've done some searching - found 2 kits complete - right down to the automatic on/off switch
1. - http://www.lingenfelter.com/store/flx505.html
2. - http://www.breathlessperformance.com...ric%20fans.asp
both seem to sell for just under $600 bucks.
My question is why go with 2500 - buying all seperate parts - then buying the Nelson harness - then figuring the tuning - etc - when you can just buy a plug in kit...... can it actually be thatmuch cheaper? or has experience proven these products no good?
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07-01-2007, 11:18 PM
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Hummer Veteran
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Join Date: Nov 2006
Location: Louisiana / DFW
Posts: 80
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Re: 2500HD Fan Part Numbers
Quote:
Originally Posted by HUM GOOD
I've done some searching - found 2 kits complete - right down to the automatic on/off switch
1. - http://www.lingenfelter.com/store/flx505.html
2. - http://www.breathlessperformance.com...ric%20fans.asp
both seem to sell for just under $600 bucks.
My question is why go with 2500 - buying all seperate parts - then buying the Nelson harness - then figuring the tuning - etc - when you can just buy a plug in kit...... can it actually be thatmuch cheaper? or has experience proven these products no good?
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to me, it isn't a matter of price, I use oem parts whenever I can.
Also, heard negative things about flex-a-lite fans - blades breaking, ect.. Which may or may not be true, but I'll try to avoid possibilities when I can.
on some level, there's also the matter of resale value...
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07-02-2007, 05:07 PM
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Hummer Professional
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Join Date: Jul 2005
Posts: 407
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Re: 2500HD Fan Part Numbers
Quote:
Originally Posted by HUM GOOD
I've done some searching - found 2 kits complete - right down to the automatic on/off switch
1. - http://www.lingenfelter.com/store/flx505.html
2. - http://www.breathlessperformance.com...ric%20fans.asp
both seem to sell for just under $600 bucks.
My question is why go with 2500 - buying all seperate parts - then buying the Nelson harness - then figuring the tuning - etc - when you can just buy a plug in kit...... can it actually be thatmuch cheaper? or has experience proven these products no good?
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I'm willing to bet that those are both Flex-A-Lite (FAL) kits and you can find them cheaper at Summit Racing or Jeg's if you can find a part number for the kit (looks like it might be 595). FAL is also notorius for controllers that burn out...a good number of the Lightning guys went the FAL route and several have had two or three controllers melt on them. I'd avoid the FAL controllers...
Last edited by Humdingah : 07-02-2007 at 10:39 PM.
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