A GM service bulletin that was issued back in April of this year provides insight into a problem that certain GMC Hummer EV Pickup owners have experienced when trying to charge the vehicle at public stalls.
The service bulletin, published on April 5th, 2022, indicates some 2022 GMC Hummer EV Pickup models may experience a software issue when plugged into a public charging stall that may prevent the vehicle from initiating the charge sequence. This problem is related to a “software anomaly,” of some sort, which may be caused by oversized or damaged terminals in the charge cord connector. This allegedly happens more frequently at charging stations that are used often and with multiple vehicles, such as those at car dealerships.
From what we can tell, a fix for this issue has not yet been identified. GM’s initial service bulletin from April indicates “updated software and calibrations will be released at a later date and communicated at that time,” however we can’t find any subsequent communications indicating that a solution has been found. In the meantime, GM recommends service technicians clear any fault codes related to this problem and tell owners to try another charge station. This problem produces the diagnostic trouble codes P0D9A, P298C and P0E5F.
The 2022 GMC Hummer EV Pickup began rolling off the assembly line at the GM Factory Zero plant last fall. All GMC Hummer EV models produced thus far are limited-run Edition 1 models, with the tri-motor EV3X trim level set to enter production this fall. Production of the dual-motor EV2X and EV2 models will commence in the spring of 2023 and in early 2024, respectively. Production of the GMC Hummer EV SUV will begin in 2023, as well.
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Comments
Unfortunately, it seems that this new Hummer has a litany of problems. I certainly hope that GM can get all of this straightened out sooner than later. Obviously, this does not look good.
Hummer was not produced for ~10 years. Then, GM brings it back as an EV “Super Truck”, only to have many issues with the vehicle. A ~$100k truck that is crapping the bed before it is even fully released? Come on guys, get it right!
Please list and site all problems. Also, bear in mind this truck was designed from the ground up in 2.5 years… industry record. Theres going to be hiccups. But please, list and site all problems.
This very site has been listing all the problems, like this charging issue, the leak that shorts out switches in the door, and of course the corrosion on the high voltage connector.
Using an excuse that the vehicle was a rush job doesn’t inspire confidence. Are we supposed say, “Oh yeah there a lot of problems with this vehicle, but that’s fine because it was a rush job.”
-High-voltage connector corrosion
-Malfunctioning taillights
-Window and lock switches malfunctioning
-Water leaks around the driver’s door
-DIC gremlins
-Etc.
Listen, I am a GM guy through and through, as my entire family has been for 4 generations (my current vehicles: 2017 Cruze RS, 2011 Camaro SS Convertible, 2017 C7 GS). With this being said, if a vehicle is having a plethora of problems, I am going to call it out. It is what it is. I am not going to swing from GM’s nuts and pretend like the new Hummer EV has been flawless. I am being objective about it and I am in hopes that GM can get the problems sorted out.
“I am going to call it out.”
Especially if it’s an EV….
Most of the problems seem pretty minor, and, you’re right, they’re an inconvenience, but it’s not like piston rings are failing, or a journal isn’t distributing oil properly so a main bearing is failing, or a camshaft is de-laminating ‘cuz of a faulty manufacturing process by a sub-contractor–oh, wait, that’s right, EVs can’t have any of those problems, so all we’re left with is faulty window switches and such.
BTW, “Etc.” isn’t a valid inclusion on the list, it’s obviously just there to make the list look longer and more serious, ‘cuz, really, the list is pretty weak…
Why would it matter if its an EV? I have no problem with the EV market and actually find them to be quite interesting. It’s obvious that you’re just here to fight (like many teenagers), but that is your problem. To each their own.
If you are comfortable with a $100k+ vehicle being released with problems, I certainly respect your opinion. It seems as if you don’t have high standards, when it comes to purchasing goods for your personal use.
BTW, if you’re interested, I have a brand new PC for sale. The keyboard shorts out occasionally and the operating system refuses to boot upon power. You’re interested right?
I don’t think name calling is the right course of action. Let’s try to be adults here.
Ooh, good one! Tossing insults is way easier than actual dialogue, isn’t it? See? It does take one to know one!
Not an industry record. That record belongs to the 1962 Chevrolet Chevy II. From drawing board to production in 18 months.
I wonder if gm could modify the Hummers frame to accept an ICE powertrain?
I’ve never had any issues with gas nozzles.
You know it’s funny… not once have I heard a new vehicle may have issues refueling at your local gas station.
I bet they did in the early 1900s when they were going from horse and buggy to cars…
A hole in a gas tank is a much simpler design than a male and female plug.
Not at all. One, the thing has to be designed to not break apart, leak, and start a fire during a crash. You probably haven’t looked under a car and realized there’s a clear area under the filler and piping where nothing hot (exhausts particularly) or electrical can run, in the event of a leak.
Two, there’s complex vapor recovery systems and leakage requirements. In fact, you can’t put a hole in a tank anymore, emissions requirements are now why cars have that dual flap capless system.
I was really hoping we were past that and wouldn’t have to relive it.
well, then you have not been listing or it is just not news. the Vent tubes on GM trucks go through the frame and often get twisted or kinked during install. the result is slow fill or no fill at all when it does not vent properly
To be fair, the description of this problem almost makes it sound like you could have problems charging if the charger is broken.
That doesn’t really seem like an issue with the vehicle.
You are far away from home,it will not charge,there is no fix and not even a loaner is available.
first year vehicles are bound to have problems, regardless of the make, model, or manufacturer. especially with ev’s because they are still newish. i thought we new this already.
Hey Mary–What happened to no more crappy vehicles?
Martin,
Mary’s quote was “No more crappy cars”. After that, GM quit building cars. The edict might not apply to trucks or SUVs.
I remember when they first brought out cars that required unleaded gas. For many years there were two different sized nozzles for gas. The no-lead nozzle was smaller than the leaded nozzle to prevent people from mis-fueling their new car car with cheaper (two cents) leaded fuel. A lot of people including myself bought a “test tube” which was a straight pipe that replaced the catalytic converter so you could use leaded gas. You also had to get a small plastic adapter to fit on the gas nozzle that reduced the diameter so the larger leaded nozzle would fit in the vehicle’s filler opening. These kits were readily available at auto parts stores and I “fixed” my new 82 S-10 to run on regular gas. It was illegal to “misfuel” but lots of people did it. LOL those were the days. That old converter was in the barn for many years before I finally trashed it. I wonder if that nozzle reducer is still out there somewhere?
Funny thing this reminds me of my Volt codes that would popup up sometimes when using 1 of the 4 port public charger at this one park location where they provide them. This one charger would always not start charging properly and then cause a code on my volt that did not clear while are after having driven on the already existing remaining charge or after at least one home successfull charge. I don’t know if after say 3 home charges it would auto clear as I cleared the code myself and it does not come back unti and unless I hit that charger again. To think that I would have to pay the dealer 150 bucks for such resets is not good.
ibmikey2021:
HAHA !!
Yeah they can’t get male and female plugs to work right? They’ve only had those plugs for TWELVE YEARS.
I’m hoping my upcoming Caddy LYRIQ doesn’t have such problems – but the more idiocy and incompetence I hear under Mary Barra’s ‘Reign’ seems to have no end..
One pet peeve with the LYRIQ will be no flat tire help of any kind – other than emergency roadside assistance….They don’t even give you a cheapie air compressor, but fortunately you can buy those elsewhere.
Also all the free useless stuff with GM EVs lately that I don’t need, and really don’t want to pay for – I’d love a LOWER MSRP instead…
For instance the charger in the car will be 80 amperes – when the ‘performance’ version of this car (500 hp) will only be 48 and the upcoming performance blazer will only be 48….
I don’t need anything bigger than 30 amperes ever…. All the bigger stuff should be left optional. And all the free fast charging or $1500 credit for electricians… I don’t want ANY OF THAT and will probably never use (or seldomly use) the free fast charging card – simply for the fact that in my locale, there are ZERO fast chargers of the brands (EVGO and ChargePoint) that can use the card.. Sure there are other brands of fast chargers but the card issued by GM isn’t acceptable to them.
So it is disconcerting to hear that GM can’t get a 12 year old Trivial (yet absolutely necessary) device to work right..
If Mary Barra can’t corral this and other issues, she just might bury GM.
I too am concerned that my DE Lyriq will have the same charging issues as the Hummer. I will opt for the GM charging charge card as I have a perfectable capable garage charger of 30 amps used for my Volts and Tesla. Hopefully there will be enough of the GM approved chargers that I can actully use the “free” chaging.
At playAutocad. totally new high dollar technical product albeit a motor vehicle, engine, locomotive, bulldozer, etc. Is a shakedown period by users in the field to work out bugs and kinks not found in factory lab and field tests and beta testing.
I worked for Caterpillar and their first on highway diesel truck engines were abominations. After a few years of user operation and warranty claims the engines evolved into decent products. Toward the end of Caterpillar’s on highway diesel truck reign in the early nineties, they had captured 40+% of the North American Class 8 on highway truck engine market with superb on highway diesel truck engines.
Caterpillar looking at EPA mandated emissions regulations development costs of approximately $2 billion dollars abandoned this engine segment to the delight of Cummins and Daimler’s Detroit Diesel.
Automakers, engine makers, machinery makers are engineering, manufacturing entities that seek to build products that sell themselves where their dealers are conduits to users. With the dealers beating the bushes in the field for sales and providing the service, parts and financial support.
Any factory fresh totally new product like the Hummer EV will take a couple of years to work all the kinks out.
This is a new product given that any fool would recognize.
So don’t complain and belly ache you spoiled moaners out there in autoland.
BTW: Public charging stations have a way to go in their evolution. EV drivers and passengers have no facilities to discharge while the vehicle is charging. Having a convenient place to Pee and defecate along with refreshing with food and beverage is most important for driver and passenger comfort and safety. Too bad that Elon Musk did not consider the human comfort element in his stand alone charging hardware.
I agree. Driving a Tesla Model 3 and Chevy Bolt EV has given me a better perspective on the future of EVs. Tesla’s charging station network is where everyone else should be. It is great seeing EVs with 800-volt charging capability except the charging stations to support this are few and far in between. Since a large percentage of potential EV drivers will not have the ability to charge at their residence it is the public charging station infrastucture that will determine who dominantes in the EV market by the end of this decade. Tesla has their own challenge of updating their charging stations to a higher charging rate but with the competition lagging so far behind there really is no rush for Tesla to get this done as just having a reliable charging station of 400-volt is better than a few sparse state of the art 800-volt stations across the country,
With the Chevy Bolt EV being in production for so long and having worked out most of its problems including the recall, one would think it would be a better test bed for this new Ultium battery framework. Many more would be beta tested with real world use buy the consumer. The production rate of the Hummer EV is so low it will likely not be until a more mass produced vehicle like the Lyriq, Silverado, or Sierra come out that most of the problems get sorted out assuming volume for these is at scale.