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Roadtech · 09-21-2014, 08:00 AM

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

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

Ron_CA · 09-21-2014, 08:46 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, 09:15 AM

Is this with a 1/2 ton format?

dznf0g · 09-21-2014, 09:21 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, 02:37 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, 10:33 PM

Good luck! still, be careful not to overload!

Airrogant · 09-22-2014, 04:44 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, 05:50 AM

No.

phbarnhart · 10-01-2014, 01:55 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). http://www.gmfleetorderguide.com/NAS...&page=&butID=8

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Roadtech · 10-01-2014, 02:59 PM

Quote:

Originally Posted by phbarnhart

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, 03:06 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, 03:08 PM

Quote:

Originally Posted by Roadtech

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, 03:49 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, 03:59 PM

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

phbarnhart · 10-01-2014, 04:35 PM

Quote:

Originally Posted by subfan1

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, 04:48 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, 04:50 PM

Quote:

Originally Posted by subfan1

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, 05:50 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, 08:43 PM

Quote:

Originally Posted by Sbb

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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