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Sounds like another batch was found to be lacking the weather sealant.

Magna folks were concerned about one aspect of the pack where there was sealer in a seam between the two halves of the clamshell. Wonder if they were right.

 

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Wonder if this is a result of something discovered after a Hummer was flooded in Ian [/wild speculation]

 

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As some one with zero manufacturing experience, how does an issue like this occur? I know this vehicle was ambitious (both timeline and capabilities), but I also am led to believe they test everything, over-engineer and quality control the quality control. Does this happen because a late-in-the game change is made and people assume it's just as good as the original design? Or they knew the original design had risks but they thought they solved the issues based on earlier testing?
I know we are all purely speculating, but I'm still waiting for mine, so speculation is all I have.

I have the unique experience of being able to see the line where the battery packs are made. The pack halves are all pressure tested to ensure they won't have any leaks when assembled. There was some concern about the sealing area between the two parts of the pack where laser welded panels overlap potentially leading to leaks down the line if the sealer wasn't done just right. Normally with sealing surfaces, you want a continuous piece of metal to seal against but these packs are so big they couldn't do it this way.

I have no insight into if this is what the actual problem is though, it's just my assumption after having seen the processes involved.

 

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So, as a fix, are we talking having to drop the pack and hand sealing at dealerships with the halves in situ or is this a "return the pack to the factory and have them reseal and press?"

From a legal perspective it seems like they'd just ship out new packs to dealers, ship the defective packs back to the factory for refurb.

I have no idea if they can acceptably fix it if that's what the issue is.

 

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2022 GMC Hummer EV Recalled for Improperly Sealed Batteries — CNET

Of all the things that could enter an electric car's battery pack, water is not really ideal.

apple.news

Plug the wagon with caulk

 

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That last word scares me but is true, I guess.

If you believe the people on the Bolt forums that don't know how to calculate the risk, there is no risk of the Hummer starting fire.

 

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Perhaps they should place less emphasis on Hummer clothing and more on actually selling the vehicle. Email I just got.
View attachment 3607

Is don c pronounced dunce?

 

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Got this email yesterday from GMC. I thought the interesting part is they just say don't drive the vehicle through water over 24" deep. Makes me feel a little better about the whole situation.

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Wonder if you'd get a "fix" quicker if you drove through 25" deep water.

 

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I was looking for more details or any updates this morning and I reread the main report to NHTSA. This stands out at the beginning of the report:

Population : Number of potentially involved : 824
Estimated percentage with defect : 1 %

8.24 vehicles are defective and we are in this situation?

1% was the number stated for the Bolt battery defects as well. I think it's just the lowest percentage they can state and they can't prove how many really are affected without inspection.

GM dicking me around for over a year on the Bolt issue made it an easy choice to sell the Hummer when I was having issues the dealer was dragging their feet on fixing.

 

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They’re VINs say 2024 SUVs

I'm pretty sure they aren't legally allowed to sell those until 2023. Final production can't be earlier than Jan 1 2023.