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Discussion Starter · #21 ·
I'm inclined to wait until i have more info to confront the purchasing dealer since I'm getting it serviced at a much closer one anyway (5 miles vs 60 miles). But the codes weren't thrown until well after that 60 miles drive home so I don't think the dealer would have found this with a test drive? I know they didn't try to DCFC it because they only have a L2 charger there (which I did see them use on this car).
 

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I'm inclined to wait until i have more info to confront the purchasing dealer since I'm getting it serviced at a much closer one anyway (5 miles vs 60 miles). But the codes weren't thrown until well after that 60 miles drive home so I don't think the dealer would have found this with a test drive? I know they didn't try to DCFC it because they only have a L2 charger there (which I did see them use on this car).
Yes. If this was messed up at the factory, the coolant could very easily have been at the correct fill line level, and drop below the hose after a DC charge. Ask me how I know.

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I'm inclined to wait until i have more info to confront the purchasing dealer since I'm getting it serviced at a much closer one anyway (5 miles vs 60 miles). But the codes weren't thrown until well after that 60 miles drive home so I don't think the dealer would have found this with a test drive?
Probably not.

GM used to pay about 1.0 hrs labor for a PDI. Its included in the MSRP of the vehicle and varies with the rate the dealer is paid for labor from GM.

A test drive was maybe about 5 miles. If that.

We had a route that included a short stretch of highway (something above 60 MPH) and a back section that was really flat that allowed you to check steering. Did the vehicle pull/drift/steering wheel centered/pull when braking?

I'd wager to say fluid levels were checked at the beginning of the PDI (and they where probably good at that point) and the last thing done was the test drive. After the test drive, its parked over by the detail shop for a wash. The fluid levels are not re-checked. You would take a quick look under the vehicle to see if anything was leaking or dripping and go grab the next PDI.

Stuff happens.
 

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Looking at the pictures, there was recently coolant in that reservoir. If it had been dry for many days, I don't think there would be drops of it on the top of the container. My best guess (and it's only a guess) is that there's coolant in there, but it's just low. Burped air bubbles makes sense, but a leak is also possible. Take it to the stealership and ask them to check the vacuum and top off the coolant. If they give you any hassle, call GM and complain.
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Just doing the coolant refill service procedure in a shop can take quite a while. It's going to take several times to build back up a vacuum after each time some coolant is pushed in. Then, running the coolant pump. I would wager it probably takes at least an hour (or more) in a shop environment.

Even a "simple" purge to get that one last air pocket out could take some time at the dealer service level.

Assembly line is kicking out a new vehicle about every 1-2 minutes.

Granted, the assembly line is set up for quick production and made to do this procedure as quick as possible.

With as complex as the Bolt is (or any EV vehicle is) the assembly line is concentrated on time & efficiency. There may be a pocket of air that might not get removed.

PDI "could" catch it but, at my dealer and most others, they did not want many miles put on new vehicles for a new customer. Can you guess how many people would complain if their new Bolt they had ordered, that just came in and is ready for the customer to take delivery, has 30 miles on it? People would be complaining more than a low coolant jug. ;)

This might end up being a procedure that a dealer would go through with a new owner for an EV. After taking the vehicle home, for the next couple days have the customer pop the hood and check the coolant level. If it's low, call us and we will send someone out to your house to top it off. Or, give the customer a plastic container (1-2 Qt) of 50-50 Dex-cool and water to top off if needed.

I know when I take delivery of mine next week, I'm going to pop the hood every day for the next week just to check.

Besides, I have a gallon of Dex-cool for my other Chevy's that sometimes need a top-off.
 

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Just doing the coolant refill service procedure in a shop can take quite a while. It's going to take several times to build back up a vacuum after each time some coolant is pushed in. Then, running the coolant pump. I would wager it probably takes at least an hour (or more) in a shop environment.
Starts at 27:30 in. The whole system is 7.1 liters in volume. The video is probably edited a bit, but It doesn't appear it took anything like an hour.

 

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The video is probably edited a bit, but It doesn't appear it took anything like an hour.
Yea, if someone goes and brings the vehicle in the shop and gets it ready for you. Pulls it right in your stall. Then, go to the tool room to find the coolant vacuum tool (that is missing the adapters), then go to the parts counter to get the coolant, then wait for the parts dept to get you a few gallons of de-ionized water, then go try to find the shop MDI and when done perform a 27 point inspection. Then, go test drive the vehicle, park it out back, complete the paperwork.

Otherwise. . . sure, it's just 5 minutes.

 

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Discussion Starter · #34 ·
I have never had an interaction with a service department that didn't last at least half a day, even for super simple stuff. I'm expecting to drop it off and take a Lyft home and hope for the best.

The worst part is... I really like this car! I moved it from my parking spot behind our building to street parking today. No errors popping up, nothing about propulsion reduced or anything which continues to give me hope that the battery itself is fine. I just kinda sat there for a few minutes fiddling with stuff and enjoying the heated seats. I'm coming from a 10 year old Ford Fiesta and this is just so many steps up. Sigh.
 

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Looking at the pictures, there was recently coolant in that reservoir. If it had been dry for many days, I don't think there would be drops of it on the top of the container. My best guess (and it's only a guess) is that there's coolant in there, but it's just low. Burped air bubbles makes sense, but a leak is also possible. Take it to the stealership and ask them to check the vacuum and top off the coolant. If they give you any hassle, call GM and complain.
View attachment 52137
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This is very similar to what mine looked like when our EUV threw the same code as OP’s. I also have the benefit of knowing that ours was full when I took delivery, so in the end the culprit was a roughshod job of the Vac N Fill procedure when the battery was replaced. Link to thread:
 

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Discussion Starter · #36 ·
Thanks for linking that! Sounds like everything resolved for you once everything was refilled properly?

Interestingly one of my reservoirs is also overfilled while one looks normal. The cabin heat has already been used a lot (the dealer was showing off the precondition function quite a bit) and I think that's the one that is lower... perhaps it also burped up some air...
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Is the whole vacuum procedure excessive? Why not just run the coolant pump? That's how the bubbles surfaces when you drive, right?
 
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