2024 GMC Hummer Suv problems

“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…”

“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.”

“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…”

“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.”

“Super cruise does not work. It may turn on at random for a minute or 2 and then it shuts off with zero warning and the vehicle almost comes to a complete stop. This is a huge safety concern. I took it to the dealership and they told me that this falls on GM 100% as they are being told GMs engineers are trying to find a fix but for now there is nothing they can do, I am to continue driving it knowing this is unsafe. The turn signals and Bluetooth stopped functioning for no reason which had to be fixed Battery charging module burned up at 300 miles. I asked for a buy back and GM refused. I asked for an engineer to come on site and they refused to set it up unless something else is happening as if this super cruise issue isn’t enough. I filed a complaint with the BBB hoping to get the attention of someone who would actually realize how unsafe this is and that same person from GM lied and said I declined assistance. I asked that lady for help and she stated that it would have to wait until something else happened.”

“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.”