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GMC Forum: 2004 Denali 6.0 Dual radiator fan Install
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  #1  
Old 07-11-2018, 12:22 PM
Converseguy Converseguy is offline
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Default 2004 Denali 6.0 Dual radiator fan Install

my Daughter has a 2004 GMC Denali 1500 XL with a 6.0 gas engine. She has always complained the AC does not cool at idle. Realizing it was a air flow issue. I install a dual fan system. I removed the old mechanical fan and clutch. Purchased a dual fan assembly from Rock Auto .Part number GPD 2811689 $119 plus tax. $18.98 Shipping. Ordered from Amazon Prime a Dewhel Aluminum Black Water Temp Meter Gauge Joint Pipe Sensor Adapter. $9.99 no shipping cost. Also ordered ordered 2 Ac Delco PT2649 Fan connectors $33.36. Last I ordered from Amazon prime a Hayden 3654 Adj Thermostic Fan Controler for $41.31.Do not use a Hayden 3651.
Remove Plastic Radiator top cover all push pins.
Remove Upper fan cover.
Remove Fan and Fan clutch.
Remove Lower Fan Cover.
Install new fan assembly . Perfect fit and uses orignal fan shourd bolts.
Very cold air at idle now 600 rpm's
wanted to attach photos but this would not let me. Files too big
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  #2  
Old 07-11-2018, 12:43 PM
Converseguy Converseguy is offline
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Each fan draws less than 10 amps. Was not sure what amps the fan draw so I inserted fuses to see what the fan would run on. Installed a 10 amp fuse and ran with no issue.
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Old 07-17-2018, 06:36 PM
Converseguy Converseguy is offline
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Do not use a Hayden 3651 fan controller. Failed second day in service. Bad crimpted fuse connections and controller over heated on 20 amps service
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Old 07-17-2018, 06:46 PM
Converseguy Converseguy is offline
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Do not use a Hayden 3654 controler either piece of junk also. ended up hard wireing two 40 amp relays.
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