2024 GMC Sierra EV - Revealed

JavierH19 said:
Higher energy density compared to cylindrical or prismatic cells if I'm not mistaken. What's bad about them, longevity or safety?
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Longevity mostly. This is why Ford, Porsche, Audi...etc all limit max draw to like 4 seconds or something. They don't want to prematurely shorten their lives. Prismatic have fantastic packaging and cooling, so should last really long and BMW doesn't limit the i4 M50 or iX M50 on maximum draw, so that tells me they are simply a better and more capable design. Cylindrical are probably the most dense, can be cooled very well but of course have packaging issues. Tesla also doesn't limit max draw, which tells us that they are also better and more capable.
 
CKN said:
Jeff-there is nothing on the road uglier than a cyber truck. That thing looks like a door stop with 4 wheels attached. I will make a prediction. The cyber truck will never sell ANY WHERE CLOSE to the Ford and GM electric pickup offerings. IT will be a tiny fraction.


As it is-it's already late to the party.
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EV stealth ?

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OVERKILL said:
Longevity mostly. This is why Ford, Porsche, Audi...etc all limit max draw to like 4 seconds or something. They don't want to prematurely shorten their lives. Prismatic have fantastic packaging and cooling, so should last really long and BMW doesn't limit the i4 M50 or iX M50 on maximum draw, so that tells me they are simply a better and more capable design. Cylindrical are probably the most dense, can be cooled very well but of course have packaging issues. Tesla also doesn't limit max draw, which tells us that they are also better and more capable.
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All makes sense for a pickup truck or sports car that may be pushed to the limit at times. But i wonder what the overall packs output C rating is at full draw. It's got so much capacity the cells may not be as strained as it seems. Now if they halved the pack and had the same draw it would add even more strain to where they'd go beyond their output c rating. So I could imagine cheaper versions with smaller packs being power limited on purpose with downgraded ratings. I personally have the most faith in prismatic cells with Lfp chemistry as they seem like they'd last the longest life but they do need a bit of a charging ritual to like 100% every week or two for balancing and range estimation accuracy i believe.
 
JavierH19 said:
All makes sense for a pickup truck or sports car that may be pushed to the limit at times. But i wonder what the overall packs output C rating is at full draw. It's got so much capacity the cells may not be as strained as it seems. Now if they halved the pack and had the same draw it would add even more strain to where they'd go beyond their output c rating. So I could imagine cheaper versions with smaller packs being power limited on purpose with downgraded ratings. I personally have the most faith in prismatic cells with Lfp chemistry as they seem like they'd last the longest life but they do need a bit of a charging ritual to like 100% every week or two for balancing and range estimation accuracy i believe.
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Yes, I've been really impressed with prismatic and BMW's implementation, so I was quite surprised to hear they are looking at switching to cylindrical in the future on their next platform.

Good question on the C rating, I obviously don't have that data, but I assume we get a hint at how close to the margin that is with the thermal draw limits (the full power limits) we see from Ford, Porsche, Audi. Do we know if GM is doing the same thing?
 
OVERKILL said:
Yes, I've been really impressed with prismatic and BMW's implementation, so I was quite surprised to hear they are looking at switching to cylindrical in the future on their next platform.

Good question on the C rating, I obviously don't have that data, but I assume we get a hint at how close to the margin that is with the thermal draw limits (the full power limits) we see from Ford, Porsche, Audi. Do we know if GM is doing the same thing?
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Only reasons i can think of is the overall pack energy density and weight since they have a lower watt hour per lb and thus weight more while having less kwh's which everyone raves about. Lighter and more energy dense batteries are the obvious immediate solution to range and efficiency right now but lfp batteries are known to be able to dc charge faster so the small dip in range isn't a big deal and they simply retain their capacity longer so you end up having more range in the long run from less degradation which is an issue with the other chemistries. You can start with a higher soc as well and i think regen is also more efficient with lfp.
 
JavierH19 said:
Only reasons i can think of is the overall pack energy density and weight since they have a lower watt hour per lb and thus weight more while having less kwh's which everyone raves about. Lighter and more energy dense batteries are the obvious immediate solution to range and efficiency right now but lfp batteries are known to be able to dc charge faster so the small dip in range isn't a big deal and they simply retain their capacity longer so you end up having more range in the long run from less degradation which is an issue with the other chemistries. You can start with a higher soc as well and i think regen is also more efficient with lfp.
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Looks like GM calls it "Watts to Freedom":
https://www.gmc.com/support/vehicle/driving-safety/ev-driving/watts-to-freedom
GMC said:
Watts to Freedom† is a unique mode found on the 2022 GMC HUMMER EV Pickup Edition 1 that enables peak torque for a short time, enabling very fast acceleration. It is designed for use only in closed courses. It is the driver’s responsibility to ensure that driving style and acceleration do not endanger or inconvenience other road users.
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NismoNVT said:
Whose supplying the packs though?
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GM now makes their own batteries. They opened their first battery plant about one month ago (OH). Two more plants under construction (TN & MI) and a 4th starts construction soon (IN).
 
E365 said:
GM now makes their own batteries. They opened their first battery plant about one month ago (OH). Two more plants under construction (TN & MI) and a 4th starts construction soon (IN).
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I thought Ultium plants were joint ventures between GM and LG Chem (supplier).
 
JeffKeryk said:
I don't care much for the looks of the Model Y myself. Owners flat out love 'em, though. Make mine a Performance...
Did you know the Model Y is expected to become the #1 selling vehicle in the world of any kind in the next year or two?
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Where'd you come across that prediction, Jeff?
 
Shel_B said:
Where'd you come across that prediction, Jeff?
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See post #69 under BITOG
There are numerous articles on this. Not bad for a $68K vehicle...

It will likely be #1 this year by revenue and number 4 or 5 by sales units.
Next year the Austin and Berlin ramp expenditures will pay off in both revenue and margins.
 
I'm not a truck person but like the Lightning this is actually quite handsome.

I think the reservations and interest in these EV trucks shows that most "truck" folks aren't using them for long distance hauling or towing. Let the folks get what they want is what I say, the free market will tell us what people want. When people shun the Lightning, Sierra and Silverado EV's then the market has spoken.

Just like Cracker Barrel offering meatless options causing a huge uproar - we want options as long as they align with what we want. That was a hoot.
 
I don't think it looks terrible. It is definitely a niche vehicle with those prices though. This isn't a truck marketed for the masses, it is a "look we can do it" EV vehicle for GM, just like the Hummer. The 400 mile range is decent, but EVs aren't ideal when towing long distances. Even though some ICE tow vehicles may only provide a tiny bit more range, until an EV can be 100% refueled in minutes at one of the refueling stations that is on every corner like a gas/diesel truck can, ICE will be the choice for most. Everyone I know with an EV owns one because they like the idea of it enough to offset any inconvenience. They enjoy the power, the technology, can charge at home, etc. It currently doesn't make sense for the average Joe Homeowner or job site guy.
 
jeepman3071 said:
I don't think it looks terrible. It is definitely a niche vehicle with those prices though. This isn't a truck marketed for the masses, it is a "look we can do it" EV vehicle for GM, just like the Hummer. The 400 mile range is decent, but EVs aren't ideal when towing long distances. Even though some ICE tow vehicles may only provide a tiny bit more range, until an EV can be 100% refueled in minutes at one of the refueling stations that is on every corner like a gas/diesel truck can, ICE will be the choice for most. Everyone I know with an EV owns one because they like the idea of it enough to offset any inconvenience. They enjoy the power, the technology, can charge at home, etc. It currently doesn't make sense for the average Joe Homeowner or job site guy.
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Are you thinking of something like this?

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CKN said:
Jeff-there is nothing on the road uglier than a cyber truck. That thing looks like a door stop with 4 wheels attached. I will make a prediction. The cyber truck will never sell ANY WHERE CLOSE to the Ford and GM electric pickup offerings. IT will be a tiny fraction.


As it is-it's already late to the party.
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And according to musk in a recent interview has caused 5 projects to be put on hold, and has cost the company untold sums for a truck that has had exactly one "production " version built. I really hope the stupid cybertruck ends up becoming a thorn in Teslas side.
 
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