[AdrianC]

Good news is you’re getting a new battery. I expect they’ll get you a loaner once they diagnose.

 

[Qarlytoz]

Although I'm somewhat relieved about the prospect of a replaced battery, my frustration stems from the poor customer service received thus far. And it's now coupled with all the experiences I've been reading throughout the forums concerning turn around-time and repeat occurrences.

I'm a huge GM fan, being a Poncho guy having owned mostly Pontiacs. I still have my '09 G8GT, and greatly lament the sale of my '00 ws6 TA and '76 Formula. I'd always back their products, even with their terrible design flaws. But I'll never stand behind their indifference regarding customer satisfaction

 

[Qarlytoz]

Also posting here from another thread. '20 Bolt, dont know build date. Purchased "certified" barely a week ago with 9300 miles. I maybe drove 250 miles before getting limited propulsion/ service needed messsge and no AC. Earlier in the morning i did charge up to 80% at a public DCFC (2nd time, and only becuase dealer didnt give me the factory evse charger). Car drove home fine, but gave me service message 2 hours later. Interestingly, my chevy app states all diagnostic checks are good, including high voltage lithium batt. Car says otherwise; Onstar gave me a U3620 code. Stealership not helpful, even refusing to assist with loaner or rental. Claims battery was changed in June (im guessing theyre confusing that with software update), and i have to wait several days for the lone EV tech to even look at it. EV concierge non-existent on the weekend. Will update if there's progress...

Just wanted to provide an update: car was dropped off Saturday, and was only updated after physically going by dealership to see what's going on 4 days later. "EV tech contacted GM engineering and was instructed to replace battery". Repair et is 2-4 weeks. AND I still cant be given a rental because of shortages....
By the way, these are the recalls previously completed concerning the battery.
GM Program # N212345940 6/13/2023
GM Program # N212345944 6/25/2023

 

[Boltage Meter]

The earliest the dealer can see me is the 22nd of August.

Update 23 AUG 23. Dealer said I need a new battery and they will arrange a loaner for me. No timeline yet on the battery and we'll see on the loaner

 

[Lslebolt]

I was also told that I needed a new battery and it would probably take a week to arrive. They had 3 Bolts come in before mine with the same issue after the recent software update. It has been 8 days and I have not been updated yet.

 

[ErikLentz]

Date of software install: 7/20/23
Date of error occurring: 8/24/23
Diagnostic Code: U3636
Miles driven before detection: Approximately 800
How long to get new pack: Unknown, dealer service department is overbooked
Car Build Date: January 2022
Notes: This vehicle was delivered with a new/replacement pack.

 

[Lslebolt]

I was too hasty in my last post. My car was returned to me this afternoon with the new battery. It was charged to 100% and the air conditioning was working again. I hope you all have a positive resolution soon!

 

[Boltage Meter]

Update 23 AUG 23. Dealer said I need a new battery and they will arrange a loaner for me. No timeline yet on the battery and we'll see on the loaner

In conclusion they replaced my Battery
They did not reset my warranty. I called the EV concierge hot line. No luck
They said they will reimburse my rental. Time will tell.

I guess I'm still envious of those who had their Battery replaced after 100,000 plus miles for free with a new warranty. Good for them.
I feel it's unfair to those of us who had our battery replaced with no reset warranty, and just plain horribly unfair to those who don't get a battery at all.

 

[ErikLentz]

Date of software install: 7/20/23
Date of error occurring: 8/24/23
Diagnostic Code: U3636
Miles driven before detection: Approximately 800
How long to get new pack: Unknown, dealer service department is overbooked
Car Build Date: January 2022
Notes: This vehicle was delivered with a new/replacement pack.

Dealer wouldn't provide a loaner vehicle. ETA on battery is 1-2 weeks and I can't drive my car in the meantime.

EV Concierge offers to pay $50/day for a rental. Ofc, I can't find a rental that price, although I found one close enough and I guess I'll just eat the difference.

The fact that a replacement battery also has a defect tells me that GM has NO IDEA what's going on in those battery plants. I regret replacing my wrecked Bolt with another Bolt.

 

[AdrianC]

Dealer wouldn't provide a loaner vehicle. ETA on battery is 1-2 weeks and I can't drive my car in the meantime.

EV Concierge offers to pay $50/day for a rental. Ofc, I can't find a rental that price, although I found one close enough and I guess I'll just eat the difference.

The fact that a replacement battery also has a defect tells me that GM has NO IDEA what's going on in those battery plants. I regret replacing my wrecked Bolt with another Bolt.

Hertz often have good deals on EVs lately.
I suspect yours and my replacement batteries had no defect, and the new diagnostic software is too sensitive.
This could cost them more in the long run than just replacing everyone's battery.

 

[MichBolt]

...This could cost them more in the long run than just replacing everyone's battery.

Each battery is about $12k. Replacing everyone's battery would be really expensive.

 

[AdrianC]

Each battery is about $12k. Replacing everyone's battery would be really expensive.

Indeed. They’ve replaced mine twice. Erik above is getting the second replacement on their car.
If this software is overly sensitive it going to cost GM a boatload.

 

[cwerdna]

EV Concierge offers to pay $50/day for a rental. Ofc, I can't find a rental that price, although I found one close enough and I guess I'll just eat the difference.

Did you try Rental Cars - Low Price Finder | Costco Travel, assuming you're a member?

 

[ElderGeek]

Maybe my turn! Charged overnight at home to 80%, started car this morning and received a "Propulsion Power Reduced" message on DIC. Scanned with TorquePro and got two codes: P1E00 and U3636. I called my local dealer and I have an appointment at 8am tomorrow. I drove the car a short distance; max power was 80 kW and max regen was 33kW.

Edit 2 (to include data per OP):

2020 Premier - 33764 miles
Date of software install: 6/20/23
Date of error occurring: 9/7/23
Diagnostic Code: U3636 and P1E00
Miles driven before detection: 3446
How long to get new pack: 2 weeks
Car Build Date: 11/2020

Update: 9/8 8:30am 9/8/23, service writers have no clue. He was much more focused on the AC not working than the U3636 code. EV tech probably won't look at car till this afternoon.

Update 2: 9/9 Dealer confirmed battery replacement. No estimate yet on timing.

 

[ElderGeek]

I have to give kudos to Walker Chevrolet in Franklin, TN. This morning they told me it will be 1 to 2 weeks before the battery arrives AND they gave me a 2023 EUV Premier Redlin Edition to drive while waiting on the battery replacement. And it had less than 300 miles on the odometer. And I love the adaptive cruise control!

 

[TennErnieChevy]

I have to give kudos to Walker Chevrolet in Franklin, TN. This morning they told me it will be 1 to 2 weeks before the battery arrives AND they gave me a 2023 EUV Premier Redlin Edition to drive while waiting on the battery replacement. And it had less than 300 miles on the odometer. And I love the adaptive cruise control!

Ooooo! That was a mistake. Now you are going to want to trade up.

 

[spear]

This post claims their car got new software instead of a new battery after it was brought in with a U3636 error code. I guess GM has decided the software was too conservative in flagging bad batteries?

 

[neutrondrip]

This post claims their car got new software instead of a new battery after it was brought in with a U3636 error code. I guess GM has decided the software was too conservative in flagging bad batteries?

They'll never find the "Goldilocks" zone for software detection on-the-fly like this. That's even assuming that their software can detect a significant amount of defects that have a high probability of leading to thermal runaway.

Great; this may mean I will have to take another day off of work so that they can take another day to install "new and improved" software.

 

[AdrianC]

Great; this may mean I will have to take another day off of work so that they can take another day to install "new and improved" software.

Yes, after you've limped home with "Propulsion Power Reduced", made an appointment, limp to the dealer, they have no clue and keep it for a few days, then you get the advanced diagnostic software V3.0. Rinse and repeat...

 

[ErikLentz]

Got my Bolt back with the new software. Guess everything is fine.