Hummer EV not charging

[Lutch01]

Plugged in my HEV to charge using the optional level 2 charger overnight. Received a text message around 8am that stated charging has stopped. Noticed that it was not dully charged and charging stopped prematurely. Drove the truck later that day and the check engine light came on. Since then, the truck is not charging using any method or type of charger, private or public. Took it to GMC today and the pulled a few codes. Taking it back on Monday as I didn’t want to leave the truck over the weekend at the dealership.

Two days before, drove though a heavy downpour. Will share progress.

If anyone else had this issue, kindly share the details.

TY.

 

[Dragoon]

This is the first I have heard of this. I hope it's a simple fix. Please keep us posted!

 

[El Chorizo]

Please keep us updated. I hope it is something simple.

 

[Lutch01]

Update:
Did a hard reset myself by disconnecting the ground on the 12v battery. Left it off for 30mins. Started the vehicle, followed the on screen prompts to turn windows down then up. Drove it for 10 mins, no CEL light after hard reset. Got back home and plugged in level 2, now charging properly.
Note: GMC pulled about 8 codes yesterday. They said the vehicle would have been there indefinitely. I requested that they perform. A hard reset. They said that their HEV tech would have to contact TAC even to do that. Glad to know that we can simply do a hard reset to correct issues. Unless there’s a physical hardware/software issue, then dealership is required.

 

[Dragoon]

Update:
Did a hard reset myself by disconnecting the ground on the 12v battery. Left it off for 30mins. Started the vehicle, followed the on screen prompts to turn windows down then up. Drove it for 10 mins, no CEL light after hard reset. Got back home and plugged in level 2, now charging properly.
Note: GMC pulled about 8 codes yesterday. They said the vehicle would have been there indefinitely. I requested that they perform. A hard reset. They said that their HEV tech would have to contact TAC even to do that. Glad to know that we can simply do a hard reset to correct issues. Unless there’s a physical hardware/software issue, then dealership is required.

Let's hope that did the trick and it was just a fluke!

 

[Lutch01]

Hopefully akin to when a hard reset is required on a computer or phone. Note that the dealership didn’t recommend this. There is a story of another owner who experienced the same issue. The dealer kept his car for a week, couldn’t find any problem. Gave the vehicle back to the owner. The owner then discovered the hard reset recommendation online, performed it and all was well.

 

[El Chorizo]

I think they are going to have to come up with an easier way to do a hard reset because I've heard of people having to do them often

 

[Lutch01]

Not difficult. Took me less than 10 minutes. They made the cover extremely well and very easy to remove and replace.

 

[El Chorizo]

Not difficult. Took me less than 10 minutes. They made the cover extremely well and very easy to remove and replace.

Ahh that's not too terrible.

 

[Lutch01]

Update. Those who have the Ultium chargers that get the sporadic amber light and no charging. The fix is to completely seat the removable plug into the charger. I had to press down onto an edge to get it seated properly. Never had an issue again…

 

[El Chorizo]

Update. Those who have the Ultium chargers that get the sporadic amber light and no charging. The fix is to completely seat the removable plug into the charger. I had to press down onto an edge to get it seated properly. Never had an issue again…

Maybe we need to create a thread dedicated just to that with pictures to help people who have the issue?

 

[Dragoon]

Update. Those who have the Ultium chargers that get the sporadic amber light and no charging. The fix is to completely seat the removable plug into the charger. I had to press down onto an edge to get it seated properly. Never had an issue again…

Good to know, thank you!

 

[HUMEV]

I had exact same issue less than a week after I bought it. Took to dealer who sent me to another dealer an hour away because their lift won't work on the SUV... they are replacing the battery - going on 2 weeks with it at the dealers. They've had it longer than I have...

 

[Dragoon]

I had exact same issue less than a week after I bought it. Took to dealer who sent me to another dealer an hour away because their lift won't work on the SUV... they are replacing the battery - going on 2 weeks with it at the dealers. They've had it longer than I have...

Are they replacing the whole battery pack? I would imagine they would have to remove the entire cab to swap that out?

 

[HUMEV]

I was told Friday a cell was bad and they expect the replacement this week - I'm not sure I have the utmost confidence they have it figured out. It wouldn't surprise me if I get a call 'uh, that didn't work'....

 

[ronindran]

What is the status of your vehicle? Did GM replace your battery?

 

[HUMEV]

It was in the shop for 2-3 weeks, they replaced the battery. I haven’t driven it much since but during one short ride I got the ‘service high voltage system’ notification. It hasn’t happened in a couple rides since…. If there is a problem, we’ll discuss swapping it out.

 

[Marcelam]

Actualizar:
Hice un reinicio completo yo mismo desconectando la conexión a tierra de la batería de 12 V. La dejé apagada durante 30 minutos. Arranqué el vehículo, seguí las instrucciones en pantalla para bajar y subir las ventanillas. Lo manejé durante 10 minutos, no se encendió la luz CEL después del reinicio completo. Volví a casa y conecté el nivel 2, ahora carga correctamente.
Nota: GMC obtuvo aproximadamente 8 códigos ayer. Dijeron que el vehículo habría estado allí indefinidamente. Solicité que hicieran un restablecimiento completo. Dijeron que su técnico de HEV tendría que comunicarse con TAC incluso para hacer eso. Me alegra saber que podemos simplemente hacer un restablecimiento completo para corregir los problemas. A menos que haya un problema físico de hardware/software, en ese caso se requiere un concesionario.

Hola buenas tardes a todos, soy de Colombia.
mi hummer ae se descargo completamente a cero, ademas se descargo la bateria de 12v
la cargue aparte porque no me dejaba abrir accesorios, subir ventanas, etc. no recibe carga del cargador principal, parpadea en rojo y el velocimetro dice que no recibe carga de la estacion. no tengo representacion de marca aqui (dealer), fue importada por un tercero, me podrian ayudar con algunas ideas? tambien cambie el cargador de 110v para descartar