09 Yukon Intermittent fan e-fans not running

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olliec420

olliec420

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There are a lot of videos on youtube of people changing this fan assembly out for a new one. I see electric motors in fans and other applications a lot and in the same type fashion. Intermittent start but help it spin or tap/slap it and it will start. Here is the video I used for installation instructions, he's having same symptoms. Overheating, no a/c, no fans.
I have checked the connections, they tight and don't look bad. And also that wouldn't explain why it starts fine when I give it a smack.

This is what I ordered, 9 and 7 blade from 7 and 5. Who knows if that makes a difference but it was priced nice on Summit, was like 70 more on amazon and eBay. https://www.summitracing.com/parts/FSS-76016
 

Doubeleive

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There are a lot of videos on youtube of people changing this fan assembly out for a new one. I see electric motors in fans and other applications a lot and in the same type fashion. Intermittent start but help it spin or tap/slap it and it will start. Here is the video I used for installation instructions, he's having same symptoms. Overheating, no a/c, no fans.
I have checked the connections, they tight and don't look bad. And also that wouldn't explain why it starts fine when I give it a smack.

This is what I ordered, 9 and 7 blade from 7 and 5. Who knows if that makes a difference but it was priced nice on Summit, was like 70 more on amazon and eBay. https://www.summitracing.com/parts/FSS-76016
we have gone over and over on fans on the forum for years, you are the 1st that I know of to report such a problem, guess there is time for everything to happen.
the only other thing I can think of that would cause the fans to not spin up properly beside simply being bad is from not enough amps.
if you still have the same issue after replacing the fans that would be one thing to check.
I did upgrade mine from the 500w oem to the 750w oem and when I did that I put in brand new motors simply because it made sense not because of any known issue with them failing I bought the shroud used out of a hummer and just had no idea how much they had been used.
in his video it looks like he put in tyc I wouldn't recommend them myself I have read to many reviews of them failing.
 
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olliec420

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That's is true, especially for your cool XFE. What kind of gas mileage do you get city and highway with it?
After you asked about the wattage I got worried and tried to go check. All it says is drop in replacement for factory with factory wiring connections. No mention of wattage.

Yes, my xfe... so I’ve been meaning to do a blog on this but I’ve been so busy and just needed to get everything done so fast I couldn’t plan videos... I am the first and third owner of this xfe. I bought it new in 09 and traded it in and a guy that worked near me bought it. I told him it was mine and etc etc and that I wanted it back after a couple years. Well last August he called and said he was getting a new one and did I still want it. I told him yes and bought it with the intention of making it a hot rod. I had a 21 Sierra. Well three weeks after I bought it, I got hit in the Sierra. And it took them 3 months to fix. So the XFE Yukon became by primary when I had no intention of that and after only having new cars since 06, needless to say it was kinda a shock. I got the Sierra back and it wasn’t right, something was up in the steering and they wanted to change the frame out to fix it and that was going to take months. The dealership bought out my lease for me. So now I got the XFE as main and bought a 98 from a guy on Craigslist. It’s the secondary now.

So back to your question after all that you didn’t ask for lol... the lifetime average mpg on the computer says 16.1. When it was new I did strictly in town driving and I don’t remember a number but I feel like it was better than 16.1 but maybe wrong. It has the LC9 engine with the oil problems and had all the Pcv, pistons, rings and bearings redone at 45000 under warranty. 156k on it now. I guess if the engine goes I’ll get a ~450hp built 5.3 and put in. I’m slowly trying to get it mint condition. The guy who had it didn’t baby it. He had kids and dogs and hunted with it so it was off road a bunch. Finding suspension parts has been tricky because of the xfe. I had a local shop do struts on it and first time they used regular ones and it was a bit squatted so I took it back and they said they re did it with the right ones. It’s been interesting and I’m sure it will get more so as time goes on!
 

swathdiver

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Thanks for the report. After learning that they existed I did a lot of research on them. Figured a 2010 would be good for my wife as they had ventilated seats and the engines received VVT for even better fuel economy. Then she drove a 6.2 and wants something faster!

Pleased with my LC9, took it to the drags again last night. It's no rocket ship hauling 6350 pounds around but racing is still racing.
 

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