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Discussion Starter · #5 ·
Great find. Looks pretty extensive in length to read through!
I was googling for images of the power tonneau cover. Unfortunately, it looks like it's a standard cover on the rails with a big canister up front unlike the more integrated ones Rivian and Tesla are doing. Rivian also found space for a 34" spare under the bed.
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Convertible top looks sweet (if overpriced at $1,700 which will get you a full soft top on a Wrangler):
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I was googling for images of the power tonneau cover. Unfortunately, it looks like it's a standard cover on the rails with a big canister up front unlike the more integrated ones Rivian and Tesla are doing. Rivian also found space for a 34" spare under the bed.
View attachment 1084


Convertible top looks sweet (if overpriced at $1,700 which will get you a full soft top on a Wrangler):
View attachment 1085
Ya, Rivian's truck is more conventional, and so like Ford, they will have room for a spare tire. How is their departure angle? Thats the trade off...

Ya, that soft roof is cool, but expensive...
 

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Discussion Starter · #8 ·
Ya, Rivian's truck is more conventional, and so like Ford, they will have room for a spare tire. How is their departure angle? Thats the trade off...
29.3 vs. 38.4 degrees despite the 4'6" bed (6" shorter). Probably also comes down to the Hummer's much larger battery which they needed to haul around 9k lbs...
 

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29.3 vs. 38.4 degrees despite the 4'6" bed (6" shorter). Probably also comes down to the Hummer's much larger battery which they needed to haul around 9k lbs...
Rivian is going to be dragging its butt all over the trails, like a Raptor does. Rivian has a 4' bed, no? Rivian packaged the bed kind of weird, due to the gear tunnel.

Battery has nothing to do with spare or not, the battery is actually front biased between the axles, if you look at the cutaway, the reason GM did not put a spare under the Hummer is departure angle. Having been off road with Raptors many times, they drag their tail all over the place. The Hummer was designed with a more off road bias. Vehicle design is always about trade offs...
 

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Discussion Starter · #10 ·
Rivian is going to be dragging its butt all over the trails, like a Raptor does. Rivian has a 4' bed, no? Rivian packaged the bed kind of weird, due to the gear tunnel.

Battery has nothing to do with spare or not, the battery is actually front biased between the axles, if you look at the cutaway, the reason GM did not put a spare under the Hummer is departure angle. Having been off road with Raptors many times, they drag their tail all over the place. The Hummer was designed with a more off road bias. Vehicle design is always about trade offs...
54" is 4'6" (I thought 4' too). 2021 Raptor is 23.9 (35s)/24.9 (37s) degrees on departure (and 5'6" bed), but your point is taken. That said, I think it's unfortunate the Hummer does not have a spare that doesn't take up 1/3 of the already cramped bed.
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54" is 4'6" (I thought 4' too). 2021 Raptor is 23.9 (35s)/24.9 (37s) degrees on departure (and 5'6" bed), but your point is taken. That said, I think it's unfortunate the Hummer does not have a spare that doesn't take up 1/3 of the already cramped bed.
View attachment 1087
Thats a good point on the spare... Wow, I thought the Rivian was 4' bed.
 

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I drove by one in my TRX yesterday (23.5 degree departure angle :) )...it looked quite small, for what it's worth.
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Ya, the Rivian is a small truck, more like Ranger class... Actually in that picture its pretty ugly from the rear too... Frumpy looking. The Rivian definitely has some good angles and bad angles. And the tires look like Lexus SUV tires, not adventure tires.
 

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What do you think of the wheel options? After what GMC showed on the concept truck I find both options a bit disappointing.
They look fine to me but I have never been that picky about wheels!

After looking through the list I was a little disappointed about the quantity if items though. Ir has fewer items than u initially figured. But, I understand as it’s just the first year and can probably add things easily enough during the year(s). It was a short development time after all.

Rivian has some nice stuff coming - that expensive camp kitchen, a nice tent, bike mounts, etc. Maybe I was hoping they had some more of the practical stuff and not mainly decorative stuff - except for the cool spot lights mounted on the hood. I am sure that will come!
 

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I was googling for images of the power tonneau cover. Unfortunately, it looks like it's a standard cover on the rails with a big canister up front unlike the more integrated ones Rivian and Tesla are doing. Rivian also found space for a 34" spare under the bed.
View attachment 1084

it’s hard for me to tell how the cover is mounted, but it would be disappointing if it’s not more integrated as you said. After all they have a patent on an integrated system which is pretty new. Maybe the roll down window interfered in some way? But can you stand on it and it be solar like a Cybertruck? 🤪
 

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I did notice that for Edition one models you can get the spare wheel bed mount instead of the covered bed in the extreme off road package. That’s good as you don’t have to pay for the cover essentially twice if you don’t need it. Most of the time you have to pay for it and just store it in your garage. That’s good of GMC to allow that.
 

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Great find! This is something to keep the excitement going while we wait for the "call."

I plan on getting the tailgate audio system... perfect for Sunday mornings before the football game.... Go Bills!
 

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I did notice that for Edition one models you can get the spare wheel bed mount instead of the covered bed in the extreme off road package. That’s good as you don’t have to pay for the cover essentially twice if you don’t need it. Most of the time you have to pay for it and just store it in your garage. That’s good of GMC to allow that.
This is really one of those we have to think about... the spare tire rack takes up a big part of the bed, and trading that for the cover is going to increase aerodynamic drag by a lot. Remember Al said in the Overland Bound video the truck is "very aero sensitive", I think that was a purposeful statement to let us know that the aerodynamics are important for range. Al also mentioned keeping the bed cover on for best Aero, twice. I took this as forewarning for if you have the bed open and spare tire in, you are going to take a beating on range, same for the roof racks and front assessory lights. Remember aerodynamic drag does not increase linear with speed, so that spare tire or light bar at 75 mph are going to have a noticeable range penalty (50 to 75 miles?). I also noticed the rack that GM is offering looks to be designed for 2 spare tires?

The more I think about this in the last 30 years I have never used my spare, or done a roadside tire change in any vehicle. When I have had a flat, I pump it and limp to a tire shop or call roadside assistance. Thinking back most of my flats have been at home (nail or screw in the tire) and slow leaks. I have never used the spare tire in any of my GM trucks dating back to 1992. I think I would buy the spare tire, and throw it in the back under the cover if I was going to be in a place with no roadside assistance, and just leave it in the garage the rest of the time. Another thing to think about, jacking up a 9000lb truck on the side of the road in a dirt shoulder (usually sloped) with a small base jack is going to be sketchy to begin with. I think people are going to struggle with this operation.
 

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I love how Hummer designed the bed-mounted spare tire carrier. It reminds me of something you'd see from a rally truck.

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