2024 GMC Hummer EV SUV problems

Filed Oct 14, 2026 · Driver assistance, Electrical · NY

The infotainment system on this 2024 GMC Hummer EV fails during driving in a way that creates a safety hazard. The system controls the rearview camera, drive mode display, turn signal audio feedback, charging and range information, climate controls, and all audible warnings. When it fails: - Screen goes completely black during drives, sometimes for 10 or more minutes. No camera, no drive info, no warnings visible. On one occasion I had to pull the vehicle over because the screen was frozen for over 10 minutes while driving. - Audio cuts out completely including turn signal clicks and warning chimes. The vehicle has to sit powered down for 4 to 5 or more hours before audio works again. - Apple CarPlay freezes and becomes unresponsive. Screen cannot be controlled. The dealer has attempted repairs on this defect at least 6 times across multiple service visits, including a complete radio module replacement in May 2026, multiple software resets, and OTA updates. None has permanently resolved the issue. Written statements on official repair orders from the dealer confirm GM has no fix. One recent RO stated "Condition currently under engineering investigation for permanent repair." Another had "NO FIX AT THIS TIME" written on it twice. The service advisor has also confirmed in writing that GM engineering has no permanent repair available. GM has acknowledged the defect exists on 2024 Hummer EVs through published service bulletins but has not issued a repair. On a vehicle this heavy with cameras, blind spot monitors, and driver assistance systems that run through the central display, losing the display at speed is dangerous. Vehicle and all documentation available for inspection upon request.

Filed Oct 14, 2026 · Steering · NY

This 2024 GMC Hummer EV has had multiple safety-critical fasteners found loose from factory assembly, discovered across several service visits at an authorized GM dealer. 1. POWER STEERING: Diagnostic code U0131 00 was found - Loss Communication with Power Steering Control Module. Dealer traced the fault to loose ground bolts G176 and G177 at the power steering control module. Technician was able to turn the bolts 1/4 to 1/2 turn to tighten them. This caused a Service Power Steering - Drive With Care warning plus a 4WD Temporarily Unavailable warning simultaneously. Steering physically became harder to turn during driving. GM TAC case 107017705 was opened. 2. DRIVE SHAFT BOLT: Found loose and replaced. 3. ALL FOUR AXLE NUTS LOOSE: On one visit the driver rear axle nut was found loose and replaced. On the next visit one week later, the dealer found THREE MORE loose axle nuts - driver front, passenger front, and passenger rear. All four axle nuts on this vehicle were loose from the factory and had to be replaced as single-use fasteners. Symptom was intermittent loud clunking noises from all four corners when stopping, starting, and braking. Loose axle nuts on a 9000+ lb EV are a catastrophic safety risk with potential for wheel separation. Loose power steering ground bolts caused real reduction of steering assist on this heavy vehicle during driving on public roads. My child rides in this vehicle. The pattern of multiple loose critical fasteners discovered across multiple service visits strongly suggests systemic manufacturing or assembly quality failure on this specific vehicle, and possibly on other 2024 Hummer EVs built in the same window. All issues are documented on official dealer repair orders. Vehicle and all documentation are available for inspection upon request.

Filed Oct 1, 2026 · Body, Visibility · 6,962 miles · OH

The contact owns a 2024 GMC Hummer EV SUV. The contact stated that the vehicle was previously repaired under Customer Satisfaction Program: N242468850 (2022-2025 Hummer EV Roof & Tonneau Cover); however, the failure occurred a year after the Customer Satisfaction Program repair. The contact stated there was water inside the cabin of the vehicle and the rear seats were soaked. There was water found on the floorboard and dashboard, accompanied by a foul odor. The vehicle was taken to the dealer, where the engineers inspected and cleaned the drains and seals. The failure persisted, and the vehicle was taken to the dealer a second time, where the drains and seals were cleaned a second time. The failure reoccurred, and the vehicle was taken back to the dealer a third time. The dealer determined that there was mold and an inch of water inside the vehicle, and the wiring needed to be replaced. However, the manufacturer instructed the dealer to stop working on the vehicle. The manufacturer was notified of the failure and denied a buyback request, stating that debris had caused the failure. The failure mileage was 6,962.

Filed Aug 25, 2026 · Brakes · IA

During the morning drive, while in one pedal driving mode, the need to apply more brake due to a quick change of traffic lights occurred. The brakes felt hard and the vehicle did not feel like it was stopping as quickly as it normally would. When I parked the vehicle and exited no warning lights or other items were shown on the dash. Once I got back in the vehicle, a MIL light was lit and the "Service Brake Assist" message was displayed. With the vehicle running, it would not move either forward or reverse. Multiple attempts were made to move the vehicle, it was blocking a flow of truck traffic at the business. No movement occurred. OnStar was contacted for road side assistance and a Wrecker was dispatched. The vehicle was taken to the dealership for inspection and repair. Still waiting on what the issue with the vehicle is. I felt my personal safety was at risk for the slow braking/hard pedal and also when parked and the vehicle immobilized.

Filed Mar 17, 2026 · Brakes, Electrical · CT · crash

While operating my 2024 GMC Hummer EV at a low speed in a school zone, I came to a complete stop at a stop sign and began making a left turn. As I initiated the turn, the steering wheel suddenly locked and became unresponsive. I was unable to turn the wheel back to the right or regain control of the vehicle’s direction. At the same time, the vehicle did not respond as expected when attempting to stop. Because I could not steer or properly control the vehicle, I collided with another vehicle. The impact with the other vehicle is what ultimately brought my vehicle to a stop. During the incident, multiple warning messages appeared on the dashboard, including a message indicating: “Service Steering System.” My vehicle sustained minimal damage due to its height (a bent side step), however the other vehicle sustained damage. Police responded to the scene and a report was filed. I was NOT issued a citation. (see report attached) The vehicle has since been towed to Northwest Hills Chevy/GMC in Torrington CT for inspection by the GMC manufacturer. This incident raises serious safety concerns, as the sudden loss of steering control at low speed could have resulted in significantly more severe consequences under different circumstances. I was in a school zone at dismissal time going to pick up my son. This appears to be a potential mechanical or electronic steering system failure. I believe this represents a serious safety defect that should be investigated to prevent similar incidents.

Filed Mar 17, 2026 · Body · NM

Charge port door on vehicle will not open regardless of what you do.

Filed Feb 7, 2026 · Acceleration · KY

The frunk latch on the vehicle becomes faulty and does not recognize the hood being latched and secure when it is. While driving, the vehicle without warning will immediately limit speed to 26mph regardless of existing vehicle speed. This has occurred multiple times when driving on the highway with the vehicle immediately decelerating and then saying the hood (frunk) is open. This poses a serious danger to not only the occupants of the vehicle but also those around them on the highway. This occurred when traveling at highway speed in the middle lane. This resulted in the inability to change lanes to pull off the highway due to the drastic reduction in speed in reference to the other vehicles on the highway causing a high stress and high risk situation for the driver and occupants.

Filed Sep 5, 2025 · Electrical · MI

The vehicle was no longer able to charge, and therefore could be stranded. Yes, the vehicle is currently back at the dealership and available for inspection. Without ability to charge, the vehicle could shutdown and not be able to restart. Yes. It was at the dealer from 6/27 to 8/20 and then the issue re-exhibited on 9/3 and it was returned to the dealership. Yes, it was reviewed by the dealership and returned, only to happen again within 100 miles. Yes, the Service Engine Soon light appears.

Filed Aug 20, 2025 · Brakes · GA

On August 11, 2025, at about 2:52pm, my vehicle was at a complete stop at an intersection awaiting the traffic light to turn green. There was a slight downgrade slope towards the intersection. The vehicle one-pedal driving was enabled. Weather was sunny with no wind or rain. Suddenly, the vehicle started vibrating violently and started rolling into the intersection. I pressed on the brake pedal but the vehicle continued to vibrate and the vehicle rolled into the middle of the adjoining lane of traffic. There was no traffic on the roadway and no other vehicles were affected. My vehicle had come to a compete stop in the roadway and I attempted to accelerate through the intersection but the vehicle would not move. I recycled the power to the vehicle and placed the vehicle into drive and proceeded to drive through the intersection. I do recall that when I was pressing the brake pedal, the vibration felt somewhat similar to vibration of the ABS brake system when the tires are losing traction but the vibration was much more pronounced. I pulled the vehicle onto the side of the road and checked the driver information display. A "Service ESC" notification appeared on the driver information panel followed by "One-Pedal Driving Unavailable Use Brake for Stopping". No other warnings or notifications were observed after this incident and the vehicle seems to be driving normally. I was able to re-enable the one-pedal driving mode the next morning.

Filed Oct 18, 2024 · Visibility · NV

The windshield wipers do not work. When the wipers are turned on, the spray comes on and does not turn off. You are unable to see as the spray keeps spraying the entire time the wipers are on. I took the dealer twice and they have been unable to repair. They now say are waiting for parts. I can't be the only one. This is very concerning. Luckily I live in Las Vegas and we have little rain. What component or system failed or malfunctioned, and is it available for inspection upon request? wipers and yes How was your safety or the safety of others put at risk? You literally can't see if you use the wipers. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes been to service twice. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? The Dealer only. GM does not seem to care. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning. I turned on wipers when it was raining. Luckily I was close to home. You cant see. Super dangerous.