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Roadtech 09-21-2014 09:00 AM

2015 GMC Yukon Denali 12,000 lb Towing
 
Now you're talkin'. 8 speed transmission with 6.2 L coming in 4th quarter 2014 with 12,000 lb towing capacity.

https://tinyurl.com/GMC-8-Speed

Ron_CA 09-21-2014 09:46 AM

Not sure if the YD will have a 12,000 lb towing capacity. Sure the engine and trans will handle, but will the suspension. The GM SUVs are typically lower rated than the trucks for towing.

Road Ruler 09-21-2014 10:15 AM

Is this with a 1/2 ton format?

dznf0g 09-21-2014 10:21 AM

1/2 ton ,yes...no 2500 SUVs. It'll be 12,000 lbs....for boaters with low tongue weight. For us, tongue weight and GRAWR will limit the load long before you reach 12,000 lbs. BUT, if it meets J2807 at 12,000, think how it performs with a lighter (TW and thus overall weight) AS.

Roadtech 09-21-2014 03:37 PM

From media.gmc.com:

"The GM-developed Hydra-Matic 8L90 eight-speed is approximately the same size and weight as the Hydra-Matic 6L80 six-speed automatic. Its 7.0 overall gear ratio spread is wider than GM’s six-speed automatic transmissions, providing a numerically higher first gear ratio to help drivers start off more confidently with a heavy load or when trailering. The 8L90 also enables numerically lower rear axle ratios, which reduce engine rpm on the highway.

With 420 horsepower and 460 lb.-ft. of torque, the 6.2L EcoTec3 V-8 is the most powerful engine offered in any light-duty pickup, and offers a maximum available trailer rating of 12,000 pounds, based on SAE J2807 Recommended Practices. As with other EcoTec3 engines, it seamlessly switches to four-cylinder operation under lighter loads to improve fuel economy."

cwf 09-21-2014 11:33 PM

Good luck! still, be careful not to overload!

Airrogant 09-22-2014 05:44 AM

That looks like a killer combo. I want one.

Speaking of a killer-combo, this setup might be branded by the "experts" as trailer-killing "overkill." Some will be worried that it will destroy our dainty AS trailers.

What do you all think? If "overkill" or "over-hitched" actually exists won't this be too much of an overpowered beast to strap any AS trailer onto?

dznf0g 09-22-2014 06:50 AM

No.

phbarnhart 10-01-2014 02:55 PM

My understanding is that the 3/4 and one ton SUVs and PUs are rough on Airstreams because their stiffer suspensions transfer too much shock to the trailer... it doesn't have anything to do with the vehicles' power.

Also, I thought the 12,000 lbs was for the pickup with 3.42 gearing. The Yukon Denali comes with 3.23 gearing and is rated to 8100lbs (2wd) and 7900lbs (4wd). https://www.gmfleetorderguide.com/NAS...&page=&butID=8


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Roadtech 10-01-2014 03:59 PM

Quote:

Originally Posted by phbarnhart (Post 1518684)
Also, I thought the 12,000 lbs was for the pickup with 3.42 gearing. The Yukon Denali comes with 3.23 gearing and is rated to 8100lbs (2wd) and 7900lbs (4wd). Model Information - Online Ordering Guide

I assume those numbers are for the 6 speed transmission. The new 8 speed with more towing capacity is coming out later this year.

Ramble On 10-01-2014 04:06 PM

I believe this is the new corvette engine. Impressive. Ford had to one-up GM with 12,200 lbs towing.

phbarnhart 10-01-2014 04:08 PM

2015 GMC Yukon Denali 12,000 lb Towing
 
Quote:

Originally Posted by Roadtech (Post 1518701)
I assume those numbers are for the 6 speed transmission. The new 8 speed with more towing capacity is coming out later this year.


That chart was recently updated to show the new 3.23 gearing coming with the 8-speed transmission. My assumption is that the towing numbers are, therefore, accurate for the 8-speed transmission. The rest of the GM fleet page has also been updated to show the 8-speed. Those numbers are listed the same as the with the 6-speed but the thing is geared higher. That said, I've ordered a 2015i Yukon XL Denali and I won't be upset if they revise those numbers upwards.


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subfan1 10-01-2014 04:49 PM

When will they get your Denali in phbarnhart? I' asuming the i is for the updated model with the 8spd?
There is a web site you can monitor from GM that has your order number. With that number you'll be able to track your order from start to finish as it's being built. If you didn't already l
know that of course.
Congratulations by the way. Do you still have your EB?

ericpeltier 10-01-2014 04:59 PM

8 speeds. Zowie! And I thought 5 was awesome! I wonder how many of the top gears are overdrive?

phbarnhart 10-01-2014 05:35 PM

Quote:

Originally Posted by subfan1 (Post 1518717)
When will they get your Denali in phbarnhart? I' asuming the i is for the updated model with the 8spd?
There is a web site you can monitor from GM that has your order number. With that number you'll be able to track your order from start to finish as it's being built. If you didn't already l
know that of course.
Congratulations by the way. Do you still have your EB?


Yes, my understanding is that the i stands for interim.

I found a website to check the order status but it wasn't working. It appears as though it isn't a GM website but run by a third party. Which website do you recommend? My order is still at 1100 but I think that's because they haven't actually started building the 2015i yet.

No, the EB was sold about 6 months ago; our family grew and it was no longer big enough. The new Denali should be able to pull a new one if we decide to buy one. Perhaps in a few years when the baby is a little older.


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subfan1 10-01-2014 05:48 PM

Wow that was fast on the sale!
Try this one:
Connects | GM vehicle order tracking

You may already have used this one?

phbarnhart 10-01-2014 05:50 PM

Quote:

Originally Posted by subfan1 (Post 1518744)
Wow that was fast on the sale!
Try this one:
Connects | GM vehicle order tracking

You may already have used this one?


Yes, that's the one I tried that didn't work. I checked out their Facebook page and it seems as though it no longer works because GM basically shut down their access.


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Sbb 10-01-2014 06:50 PM

I just replaced the bent A-frame of my Bambi, I was too zealous in hitching to my 2500 2013 Suburban. I have a brand new shiney 3/16 tube frame. Do not ask how many $$$$ it took to get back on the road. You can have too much of a good thing.

phbarnhart 10-01-2014 09:43 PM

Quote:

Originally Posted by Sbb (Post 1518779)
I just replaced the bent A-frame of my Bambi, I was too zealous in hitching to my 2500 2013 Suburban. I have a brand new shiney 3/16 tube frame. Do not ask how many $$$$ it took to get back on the road. You can have too much of a good thing.


Yeah, the rear suspension on that SUV is a pretty firm leaf spring setup; I've got a 2012 3/4. It's a fantastic towing machine.


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mefly2 10-01-2014 11:29 PM

What is the projected mpg ... ?

phbarnhart 10-01-2014 11:55 PM

That's not out yet as far as I've been able to determine. Honestly I'm not expecting more than 1 or 2 mpg increase. It's still an almost 3 ton brick. I am expecting a much better driving experience though. What I've read about the new 8 speed transmission leads me to think that it's going to be much more responsive.

gandttimes 10-07-2014 11:43 AM

Quote:

Originally Posted by cwf (Post 1514003)
Good luck! still, be careful not to overload!

I just spoke with the local GMC dealer and they have the new ordering info for the 2015 1/2 ton. With the Max Tow and 6.2 with 3.42 on 4x4 you can now go from 7200 to 7600lb GVW. Should help the payload.
George

phbarnhart 10-07-2014 12:26 PM

I assume that's for the pickup. The Yukon Denalis are coming with the 3.23 gearing and, in 4x4 Denali trim, have a GVWR of 7500lbs and a payload capacity of 1492lbs. The non-Denali trim has the same GVWR and a payload capacity of 1606lbs. Obviously, the door sticker on the vehicle controls as it takes into account that specific vehicle's options.

gandttimes 10-07-2014 01:57 PM

Correct, yes, the pickup.


George

terryV 10-10-2014 04:47 PM

OK, hold those thoughts. What about the Cadillac Escalade ESV, or whatever they call the Suberban sized unit?

I've been to the Cadillac website, as well as Edmunds, and they don't say much about axle ratios or tranmissions, or towing weights, but I'm thinking they should offer one similar to GMC for towing.

Can you still order these things and spec them out like you used to?

subfan1 10-10-2014 05:36 PM

Yes you can. The Eski and Denali should be the same. The site I go to has not been updated with the interim model information yet so I'm with you; I'd like to know more about the 2015I and where I can find the spec sheet for them.



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terryV 10-10-2014 06:55 PM

Quote:

Originally Posted by subfan1 (Post 1523162)
Yes you can. The Eski and Denali should be the same. The site I go to has not been updated with the interim model information yet so I'm with you; I'd like to know more about the 2015I and where I can find the spec sheet for them.



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That would be so cool. I could be happy with the Denali, but I really like the Caddy.

phbarnhart 10-11-2014 01:03 AM

https://www.gmfleetorderguide.com/NAS...&page=&butID=8

subfan1 10-11-2014 10:18 AM

Thanks for the link ph, I'm going to save it.
I noticed that the 5.3l and 6.2l vehicles have about the same tow ratings, different rear gear ratios however. I would have thought that the powerful 6.2l engine would have a higher rating?
I also noticed that the Chevy Tahoe information has not been updated only GMC and Caddy


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rostam 10-11-2014 10:35 AM

Quote:

Originally Posted by phbarnhart (Post 1523269)

I had a feeling this 12000# rating might be inaccurate. First, usually the SUVs from a manufacturer are rated less than a truck from the same manufacturer. Second, what has changed since last year to justify this sharp increase in tow ratings?

phbarnhart 10-11-2014 10:43 AM

2015 GMC Yukon Denali 12,000 lb Towing
 
Quote:

Originally Posted by subfan1 (Post 1523347)
Thanks for the link ph, I'm going to save it.
I noticed that the 5.3l and 6.2l vehicles have about the same tow ratings, different rear gear ratios however. I would have thought that the powerful 6.2l engine would have a higher rating?
I also noticed that the Chevy Tahoe information has not been updated only GMC and Caddy


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I think the Tahoe hasn't been updated because the powertrain hasn't changed. The Yukon Denali and Escalade have the new 8speed transmission so the numbers changed a little.

If I had to guess I would say that the improved fuel economy of pairing the 8 speed with the 3.23 gearing was considered more important than potentially increased tow ratings by sticking with the 3.42 gearing. Honestly, without a suspension upgrade to handle the extra tongue weight, added towing capacity probably wouldn't be useable.

subfan1 10-11-2014 10:56 AM

I read that the Tahoe LTZ would be the only model that would get the 8spd of the Chevy line up.
In other words only the high end models would get the new transmissions at first. Maybe someone at GM changed their minds?


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phbarnhart 10-11-2014 11:42 AM

Quote:

Originally Posted by subfan1 (Post 1523362)
I read that the Tahoe LTZ would be the only model that would get the 8spd of the Chevy line up.
In other words only the high end models would get the new transmissions at first. Maybe someone at GM changed their minds?


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For 2015 the only vehicles getting the 8 speed are ones with the 6.2 liter. I'm assuming the 8 speed will eventually cover the whole engine line. It's the same progression they used with the 6 speed rollout. If I were to guess I'd say we'll see 2016s around the middle of next year with the 5.3 and the 8 speed but it could be longer.

phbarnhart 10-14-2014 04:04 PM

GMC has updated its website with information on the 2015i model.

Looks as though fuel economy remains unchanged. Oh well. I was hopeful it would be better but I'm not overly upset about it as I was only really expecting 1 or 2 mpg increase.

Clicky

subfan1 10-14-2014 05:18 PM

Cool so which one did you order? 2 or 4 wheel drive?
Color? Wheel size?
What can I say, I'm curious.


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phbarnhart 10-14-2014 05:29 PM

I ordered Silver with Coca/Dark Atmosphere interior. XL, 4wd. Standard 20" wheels. I really like the look of the 22" wheel option but several of the reviews I read noted a harsher ride with the thinner rubber. I opted for cushier.

Otherwise it's pretty loaded with the open road and luxury packages.

subfan1 10-14-2014 05:34 PM

1 Attachment(s)
Sweet!
I just upgraded to 22 inch wheels from the 2015 model Tahoe, it had 20s. I honestly can't tell any difference.
Attachment 224394


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phbarnhart 10-14-2014 05:37 PM

Those are some slick looking wheels! I may end up doing an upgrade later. Given that they didn't need to be factory installed I figured I'd wait.

Estoniankid 10-16-2014 01:24 AM

Newbie here

We're just starting to investigate so a little help would be appreciated

Never towed anything but a root tiller before
Looking at 19-26' air range, but also need a tow vehicle

Unless the consensus is gm's rigs are inferior to ford and dodge, I'm
going to get a chevy or gmc since I've got a couple thousand bucks accumulated on my gm card

So with this new tranny (which will be paired with a 6.2 v-8?) will it be enough to tow a wet weight 25-26 footer?

Will it be too much torque, someone bent their frame or axle?

We live in Bay Area so everywhere we go involves scaling some steep mountains Want enough giddy up so I can do at least 60 mph uphill

Truck or SUV? Make any difference as towing rig?

Anything highly recommended I should get factory installed, special brakes,
type of tow package, type of tires, other options or accessories?

Thanks for input

switz 10-16-2014 04:15 AM

I would not be surprised if the Caddy version has less payload due to all the "glitz" items.

phbarnhart 10-16-2014 11:48 AM

I would think the Yukon Denali would do the job just fine. As for the new transmission, it was designed to handle the extreme torque of the new supercharged corvette so the 460 in the Denali shouldn't be a problem.

Here's an article that might interest folks. https://blog.caranddriver.com/theyve-...kups-and-suvs/

subfan1 10-16-2014 06:49 PM

The red one in the article is Gorgeous!
Those are the 22 inch wheels


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phbarnhart 10-16-2014 06:51 PM

Quote:

Originally Posted by subfan1 (Post 1525726)
The red one in the article is Gorgeous!
Those are the 22 inch wheels


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Yes, it is. If we didn't already have an Acadia in the same color I might have ordered that. Also, those wheels are fantastic, but I really didn't want anything that big on this rig.

slowmover 10-17-2014 10:51 PM

Quote:

Originally Posted by phbarnhart (Post 1525588)
I would think the Yukon Denali would do the job just fine. As for the new transmission, it was designed to handle the extreme torque of the new supercharged corvette so the 460 in the Denali shouldn't be a problem.

Here's an article that might interest folks. https://blog.caranddriver.com/theyve-...kups-and-suvs/


Towing is FAR harder on motor and trans than what any racecar can dish out.


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subfan1 10-18-2014 08:38 AM

I just saw your new trailer ph
https://www.airforums.com/forums/f206/flying-cloud-30fb-bunk-walk-through-on-2015-model-colonial-airstream-126721.html
I hope this worked


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dznf0g 10-18-2014 02:10 PM

Quote:

Originally Posted by slowmover (Post 1526295)
Towing is FAR harder on motor and trans than what any racecar can dish out.


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That's arguable!

SteveH 10-18-2014 02:45 PM

Quote:

Originally Posted by dznf0g (Post 1526547)
That's arguable!

Yea, I haven't seen too many race cars go 150,000 miles. :lol:

slowmover 10-20-2014 05:19 PM

A transmission in a Corvette might be okay on a truck at GCWR, but I wouldn't want it. It won't last. Neither will the motor is a long sustained climb. Unless the original plan was to use those in truck applications and the low volume 'vette is just "borrowing" components.

All kinds of race cars out there. Old enought to remember, Race on Sunday, Sell on Monday? Those were family cars. For all effective purposes, a 'vette IS a race car compared to a truck.

subfan1 10-20-2014 06:09 PM

Looks like very few people actually read the artical regarding the modifications to the drive train done for truck applications.

ericpeltier 10-21-2014 10:24 AM

Quote:

Originally Posted by slowmover (Post 1526295)
Towing is FAR harder on motor and trans than what any racecar can dish out.


I'll have to agree with others, that's a very general statement. I might agree that the torque-induced wear on a tow vehicle might be worse than on a race car, virtually everything else I can think of is worse on the race car.

slowmover 10-21-2014 11:13 AM

It's the load. A Corvette isn't standing on the throttle for long minutes or at increasingly low rpms.


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