RTLINGR2
Member
The factory fan harness grounds the fans on the frame rail behind the driver side front bumper.
Electric Fan Conversion Question
- Thread starter Dantheman-2003
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Matthew Jeschke
Full Access Member
Where did you source your fans from? I'm looking at RockAuto and they don't seem to have a OEM fan assembly. My plan is to buy part from 2005 1500 Silverado catalog for my 2001 Tahoe... Unless there's a better part to spec.
Tonyrodz
Resident Resident
I've read the newer model fans are better as they have more blades for cooling. K5L maybe? Pretty sure @Doubeleive has alot of knowledge on this subject.
700w motors on the k5l vs 500w on the standard, fan blades vary.
mattbta
Full Access Member
15780789 is the older 7/9 bladr K5L 700w assembly. Got mine on eBay. Seemed to work better than the newer 5/5 blade 700w for me in Texas summers at idle. They all have a significant draw. Need at least the 145a alternator but more is better.
RTLINGR2
Member
I converted my 04 2500 sub to e-fans. I sourced the fans from junkyard. Pulled the fans and harness from same vehicle. Split the forward lighting harness apart and grabbed the OE complete fan harness with factory fuse/ relay blocks. If the fan motors later go bad, you can source just the motors and blades. No need to buy a complete housing assembly.
Currently I have 2 harness in the sub, the oe for when I get the ecm programmed. Its stubbed out ready to go.
The second harness is out of an 2006 to 2010 Impala police car. It uses external relays and power source **** fuses. I currently have both fans wired through two relays not three. They both are wired for high speed only and through the ac request signal. So technically they will only operate when the the compressor is on. I know its not the correct way, but it works.
Matthew Jeschke
Full Access Member
So KL5 cooling fan package from a GMT900 chassis? Fitment is the same on GMT800?
Tonyrodz
Resident Resident
I'm 99.99% sure it is. There's been a few discussions here talking about the nnbs fans work on the nbs with no issues.
yes same as the radiators, although parts guys will stand on there head and swear they wont swap lol
a 00 will swap to a 14 and a 14 will swap to a 00
same as the alternators a 2 pin will swap from 05-2020, or vica versa and a 4 pin can be made to work on a 2 pin with a little electronic adapter.
a electric fan shroud (outer fitment) and the power connector for the motors is the same from 04/05 to 2014
and the electric fan shroud will fit 00-14, that's why you can easily change a non electric to electric and if you really wanted to you could change a electric to clutch fan
the differences are the inner shroud design to fit the blades/motor differences a 500w motor mounts different than a 700w motor and the blades will vary as well
there is a few different designs, but all "fit" the same on the radiator
