What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Doubeleive]

ahh are they physically larger?

I pulled up what I could from pics and mounting tabs are different but if the size covers the radiator, mounts shouldn't be to horrible.

View attachment 423369
View attachment 423370

I wonder where I can find over all dimensions. maybe I'll look of radiator.

They measure about 34.5 wide and maybe 18 high, hard to tell without pulling them out, not sure how they will run with the voltage on a gmt900 it's a different type of motor, can't remember if it's called direct drive or something else

 

[Doug118]

Did it damage the wheel?

Nope wheel is fine thankfully

ahh are they physically larger?

I pulled up what I could from pics and mounting tabs are different but if the size covers the radiator, mounts shouldn't be to horrible.

View attachment 423369
View attachment 423370

I wonder where I can find over all dimensions. maybe I'll look of radiator.

What are you going to use to control them?

 

[j91z28d1]

They measure about 34.5 wide and maybe 18 high, hard to tell without pulling them out, not sure how they will run with the voltage on a gmt900 it's a different type of motor, cView attachment 423388an't remember if it's called direct drive or something else

oh sweet.. I'll go measure mine in a bit.

they are brushless, so need for relays and stuff, direct from the back of the alt power is the best source, takes the load off the factory wiring as well. jcase are slow blow guess, inline 40amps should be good. and then speed is controlled thru one pwm wire. you can most likely just switch in a drop down box to convert your really trigger ground into a pwm to run them. but mine isn't defined in hpt, so I will need a conversion box. it's a bit on the pricy side for what it is. but it takes my 3 relay inputs and outputs a low, med and high speed pwm for the fans to use.

I do a lot of mods these days that wouldn't always make sense to younger me. haha. but since I don't really mod for hp these days, I have replaced that with things like fan mods that I find interesting.

 

[j91z28d1]

Nope wheel is fine thankfully



What are you going to use to control them?

rpm extreme makes a box with 3 inputs for pwm output for brushless cooling fans. mine being a odd ball having 3 speeds instead of the normal 2. it should be good.

I wish hp tuners supported these a bit more and I could just change it in the tune. but it is what it is.

 

[iamdub]

But it's true....lol

Absolutely. But some of us like to ignore logic and physics because racehoe.

 

[j91z28d1]

They measure about 34.5 wide and maybe 18 high, hard to tell without pulling them out, not sure how they will run with the voltage on a gmt900 it's a different type of motor, cView attachment 423388an't remember if it's called direct drive or something else

huh.. looks actually the same 34 and a half from a quick measurement.



I do see 2 part numbers on RA, one says HD next to it but nothing is oem looking. I need to do more research. finding the correct one on ebay might be as much of a hassle as the right alternator was ha

 

[89Suburban]

Picked up a hitchhiker. I tried yanking it out and driving over it. Refused to come out. Was afraid it was wrapped up around something important underneath. Like a fuel or brake line or wire harness,

 

[89Suburban]

Luckily I was close and able to make it to work to investigate

 

[89Suburban]

It perfectly hit the slot in that bracket and turned and locked into place. 1 in a million shot

 

[89Suburban]

Got it out