[chatz]

I’d be testing at 5-10 sites with 350kW and recording results. Call OnStars EV Concierge if you don’t get good results. Dealer may need to drive to a 350kW station to test.
To add to this, it is not abnormal for the Blazer to start at 150kW then crash to this speed mid-charge.

Thanks for the reply.
I don't know why does anyone even pay for OnStar service.
I did call the concierge, after a wait of ~10 minutes, the first agent said she supports only roadside assistance and put me on hold for another 10 minutes, the next EV concierge just redirected me to dealership to get this fixed. I asked for some kind of official documentation or link (which surprisingly GM/Chevy does not list any DC charging speed number on their product/brand page). Put on hold for 20 mins while they quoted me official manual that basically says charging speeds vary based on charger and conditions. I have already tried 3 different sites and different terminals at them, max I have received is 29 kwh. Wanted to confirm with fellow owners that I am not missing any settings in device or App as the EV tech at dealership is definitely new to this. I'm taking it back to them for sure.

 

[chatz]

I just purchased my '24 Blazer EV and drove it on a 7 hour trip home. I charged 3 times, all at Tesla superchargers, and got upto 154kW. It dropped to around 75kW from 70-80%

I personally hate EA. Their stations suck. If you have a NACS adapter, run your battery down to 30% or lower, precondition it for about 15 minutes and try a Tesla supercharger.

yet to get a NACS adapter, is on my list to make use of the mychevy rewards/points I received with the car.

 

[chatz]

That service department is incompetent. They told you DCFC at 19kW/h was normal? I hate when they use miles added per hour as a measurement. I’m assuming they used GM’s 3.1 m/kWh as a basis but everyone knows that fluctuates. Just measure by energy delivered.

When I spoke to them on call, they mentioned charging at speed of 75. I had asked them to specifically check on the below 35 kWh charging speed and assumed that is what they reported, but they had just noted the miles/hour instead.

 

[chatz]

how the hell could they connect to level 3 and say 59 miles per hour is normal??

What is surprising is GM/Chevy does not quote any DC charging speed numbers on their official website or manual. Very suspicious.
Coming from Kia, they proudly list the charging speed and time on their landing page itself!

 

[chatz]

59 miles per hour would take almost three hours to get from 20-80%. When they told you that was expected, did you tell them they were nuts? This assumes the SOC was low.

There have been a lot of complaints about the Blazer charging curve in reality. But at low SOC on a 350KW charger, people are getting fast charging rates. The problem is that they fluctuate too much.

When I spoke to them on call, they mentioned charging at speed of 75. I had asked them to specifically check on the below 35 kWh charging speed and assumed that is what they responded, but I later realized they had just noted the miles/hour instead of kwh.