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Front Passenger Airbag Wire Crimp Defect — Airbag May Fail to Deploy
Airbag warning light may or may not illuminate; front passenger airbag may not deploy as intended in a frontal crash
Catastrophic2026
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Drive unit recall, airbag defect, and software faults on the Hummer EV SUV. California owners with repeated repairs may qualify for a buyback. Free review.
The GMC Hummer EV SUV was GM's answer to the question of whether a family-sized luxury electric vehicle could carry the Hummer name credibly. Starting north of $80,000 and built on the same Ultium platform as the Pickup, it arrived carrying the same promise of extreme capability — and, for a number of California owners, many of the same problems. The headline safety defect for 2024 model year Hummer EV SUVs is the rear drive unit recall. NHTSA recall 24V320 (GM internal recall N242447080, May 2024) found that electric motor wires inside the rear drive unit were insufficiently insulated. Those wires can contact each other, short-circuit, and cut drive power without any warning while the vehicle is in motion. The remedy — a complete rear drive unit replacement at approximately six hours of labor — is covered at no charge, but it takes the vehicle out of service for a day or more. For 2026 model year owners, a separate recall is equally serious. NHTSA recall 25V769 (November 2025, 245 Hummer EV SUV units) covers trucks built between July 31 and October 24, 2025 whose front passenger airbag wire harness may have an improperly crimped terminal connection. A supplier (Yazaki North America) had its automated crimping machine offline; manual backup crimping produced inconsistent connections. If the defective crimp interferes with deployment signals, the front passenger airbag may not fire in a frontal crash. Throughout the 2024–2025 model years, owners have also experienced a recurring pattern of Ultium software instability: random DIC warning messages, Super Cruise unavailability, OTA updates that failed and required full dealer reprogramming, and a TSB-documented fault where a software anomaly in the frunk module caused the vehicle to cap its speed at 26 mph on the highway due to a false hood-ajar alert. California's lemon law was built for vehicles like this — premium SUVs where safety-critical defects have required significant dealer repairs within the warranty period.
The issues owners report most, ranked by severity — each one verified against a cited NHTSA source.
Airbag warning light may or may not illuminate; front passenger airbag may not deploy as intended in a frontal crash
Sudden loss of drive power while driving; warning lights illuminate; vehicle unable to accelerate or hold speed; may require towing
Random warning messages on Driver Information Center; infotainment screen freezes or goes blank; Super Cruise unavailable; OTA updates fail or must be completed at dealer; lower-beam headlights may not illuminate at dusk
'Service Door Latch' message displayed on Driver Information Center; inoperative power windows, door locks, or outside mirrors; unwanted theft alarm activation; water intrusion inside door
Spurious 'Hood Ajar' message on instrument cluster while frunk is fully latched; vehicle unexpectedly limits speed to approximately 26 mph including at highway speeds; frunk may fail to open or close on command
Seat belt buckle may feel loose; buckle may not restrain occupant as intended in a crash; no warning light for this condition
A settled Margarian Law case on this exact model, published with the actual settlement math.
Open any defect for the symptoms and why it matters for a California lemon-law claim. Each is tied to a cited NHTSA source.
Sudden loss of drive power while driving; warning lights illuminate; vehicle unable to accelerate or hold speed; may require towing
Sudden propulsion loss while driving is a serious safety defect. Drivetrain replacement is a multi-day service event. If combined with repeated software or charging complaints, supports multiple documented nonconformities under CA Civil Code §1793.2.
Dealer replaces the rear drive unit at no charge (approximately 6 hours labor). Owner notifications mailed May 16, 2024.
Airbag warning light may or may not illuminate; front passenger airbag may not deploy as intended in a frontal crash
Catastrophic safety defect — airbag non-deployment. Vehicles with airbag defects are per se safety nonconformities. 2026 Hummer EV SUV owners affected by this recall may assert a lemon-law claim upon notification given severity. 245 SUV units in the affected population.
Dealer installs a jumper harness with properly crimped connectors at no charge. Owner notifications mailed December 22, 2025.
Random warning messages on Driver Information Center; infotainment screen freezes or goes blank; Super Cruise unavailable; OTA updates fail or must be completed at dealer; lower-beam headlights may not illuminate at dusk
Multiple software-related dealer visits — especially within 12 months or 18,000 miles — strongly support a CA lemon-law claim under §1793.2(d)(1). Software defects impairing use, value, or safety (including ADAS failures and headlight failures) qualify as nonconformities. Pattern of prerequisite repairs before a CSP remedy is completed adds to repair-attempt count.
Dealer performs chassis control module replacement and full vehicle-wide module reprogramming per TSB 24-NA-143 using Techline Connect / SPS2. Multiple pre-requisite campaigns must be completed first. All work covered at no charge.
'Service Door Latch' message displayed on Driver Information Center; inoperative power windows, door locks, or outside mirrors; unwanted theft alarm activation; water intrusion inside door
Recurring door latch and electrical faults requiring multiple visits support a lemon-law claim for the same or substantially similar nonconformity. Door latch/lock failure is a functional safety issue; vehicle cannot be properly secured. Broad TSB coverage (2024-2025 Hummer EV SUV) signals a systemic design or sealing deficiency.
Dealer inspects door latch wiring connectors for corrosion and replaces as necessary per TSB 22-NA-144; covered under warranty if within coverage period.
Spurious 'Hood Ajar' message on instrument cluster while frunk is fully latched; vehicle unexpectedly limits speed to approximately 26 mph including at highway speeds; frunk may fail to open or close on command
Sudden highway speed restriction to 26 mph due to a false hood-ajar message creates an immediate safety hazard (inability to change lanes). If the condition recurs after dealer repair, or if combined with other electronic defects, supports lemon-law substantial impairment. NHTSA complaint #11716487 documents a repeat-occurrence crash-risk scenario.
Dealer removes and reinstalls K241 module fuse, performs Power Front Compartment Module relearn, and updates K241 module software per TSB MC-11011776. Covered under warranty.
Seat belt buckle may feel loose; buckle may not restrain occupant as intended in a crash; no warning light for this condition
Safety recall. Low unit count (115 vehicles total across all models). Relevant if owner experienced this in combination with other defects; adds to documented repair-attempt count supporting lemon-law claim.
Dealer tightens left and right front seat belt buckle attachment bolts at no charge. Owner notification letters mailed December 21, 2023.
Driver unable to access electronic owner's manual through vehicle radio/infotainment; vehicle does not know how to safely operate certain systems without manual access
FMVSS noncompliance recall. Low practical safety impact on its own, but as a fourth recall for 2026 Hummer EV SUV owners who also experience iss-02 (airbag), this adds a documented repair attempt to the record.
Dealer resets vehicle radio at no charge to enable automatic owner's manual download. Owner notifications mailed April 16, 2026.
closed
The vehicle radio on certain 2026 GMC Hummer EV SUV vehicles was not set to the correct status during production to enable automatic download of the electronic owner's manual, causing a failure to comply with FMVSS No. 208 Occupant Protection requirements.
open
The front passenger airbag wire harness on certain 2026 GMC Hummer EV SUV vehicles may have an improperly crimped terminal connection. The supplier (Yazaki North America) had automated crimping equipment offline; manual backup crimping was inconsistent. The improper crimp may interfere with airbag deployment signals.
closed
Electric motors in the rear drive units of certain 2024 GMC Hummer EV SUV vehicles may have insufficiently insulated wires that can contact each other, causing a short circuit and resulting in a loss of drive power.
closed
Left or right front seat belt buckle attachment bolts on certain 2024 GMC Hummer EV SUV vehicles may not have been tightened to specification during assembly.
Every item below comes from this vehicle's documented defects. The more you recognize, the more a free case review is worth your time.
California's Song-Beverly Consumer Warranty Act applies to new vehicles purchased or leased in California. It presumes a substantial defect exists when a manufacturer has made two or more unsuccessful attempts to repair a safety-related defect, or four or more attempts for any other defect, or when the vehicle has been out of service for 30 or more cumulative days during the warranty period. If your Hummer EV SUV qualifies, you may be entitled to a full repurchase (purchase price less a mileage offset), a comparable replacement, or a negotiated settlement. GM is required to pay your attorney's fees if you prevail, meaning most California lemon law cases cost the owner nothing out of pocket. The Hummer EV SUV's combination of a drive-unit recall requiring major hardware replacement, an airbag defect on 2026 units, and a pattern of software problems that have required multiple dealer reprogramming visits makes it a strong candidate for a lemon law evaluation — particularly for owners who have made repeated trips to the dealer for any of these issues. The above is general information only and is not legal advice; results depend on the specific facts of your case.
“Could not duplicate” doesn't mean the defect isn't real. Here's exactly what to do to protect a potential California lemon-law claim.
Document the moment it happens. Photos, video, and screenshots of any warning lights — with the date and the mileage.
Get a repair order every visit — even “found nothing.” That paperwork is the foundation of a claim.
Check your VIN at nhtsa.gov/recalls. Note any recall that has no available remedy yet.
Track your out-of-service days. California law counts the cumulative days your vehicle spends in the shop.
Keep loaner & rental records. Alternate-transport paperwork during long repairs matters.
Save everything in one place. Symptoms, dates, repair orders, and every repeat visit — the intermittent ones especially.
A 'could not duplicate' (CND) or 'no trouble found' (NTF) notation on your repair order still counts as a documented repair attempt under California law. Here is how to protect your record when the dealer cannot reproduce your problem: 1. Before every visit, write down the exact warning message or symptom, the date, time, mileage, any recent OTA update activity, and whether the DIC message cleared on its own. Capture video of the cluster or DIC safely if you can. 2. Ask the service advisor to retrieve and print all stored and historical Diagnostic Trouble Codes — not just codes that are currently active. Ultium-platform faults frequently set a code, self-clear, and then recur. The historical DTC log is the evidence that the defect existed. 3. Ask the technician specifically whether TSB MC-11011776 (frunk/hood-ajar speed limit), TSB 22-NA-144 (door latch corrosion), and TSB 24-NA-143 (vehicle-wide programming) have been checked against your symptoms. Reference them by number. 4. For the drive unit recall (24V320) or airbag recall (25V769): if the dealer cannot perform the remedy because parts are on backorder, ask for that to be noted on the repair order. That waiting time counts toward the lemon law's 30-day out-of-service clock. 5. Keep every repair order — including CND visits, hold-for-parts visits, and software-only programming visits. Each one is a documented repair attempt. 6. If you experienced the 26 mph highway speed restriction from the false hood-ajar fault, note where you were (highway lane position), your speed before restriction, and whether the frunk was confirmed closed — these facts help reproduce the condition.
The 2023–2026 GMC Hummer EV SUV carries a sticker price that comes with an implied promise: a vehicle of this caliber should not strand its owner on the highway with no propulsion, or require its passengers to ride without a functioning airbag. Yet across every model year of this vehicle, GM has issued safety recalls covering exactly those failures. The 2024 drive unit recall requires a major drivetrain replacement. The 2026 airbag recall targets a manufacturing defect that could prevent a passenger airbag from deploying in a frontal crash. The software instability pattern — documented across multiple TSBs and requiring chassis module replacement and full vehicle reprogramming on 2024 models — adds further service visits to many owners' records. Owners of 2024 Hummer EV SUV trucks with drive unit repairs, and 2026 owners with the airbag recall open, should document every service visit and consider a free California lemon law evaluation. If the same defect has required multiple dealer visits, or if your truck has been out of service for extended periods, you may be entitled to a full vehicle repurchase.
— The Margarian Law team
Has your GMC Hummer EV SUV lost drive power on the road, shown a 'Hood Ajar' warning that limited your speed on the highway, or been back to the dealer for the same software or electrical issues? If it is subject to the drive unit recall (24V320) or the airbag recall (25V769), California law may entitle you to a full buyback or replacement vehicle. Get a free case review and find out where you stand.
If you own a 2024 GMC Hummer EV SUV, it may be covered by NHTSA recall 24V320 (GM internal recall N242447080). The recall, issued May 2024, found that electric motor wires inside the rear drive units of certain 2024 Ultium platform vehicles were insufficiently insulated. The wires can contact each other, causing a short circuit and sudden, complete loss of drive power while driving — increasing the risk of a crash. The remedy is a full rear drive unit replacement at no charge to the owner (approximately six hours of dealer labor). Owner notification letters were mailed May 16, 2024. Check your specific VIN at nhtsa.gov to confirm whether this recall is open on your truck. If you experienced a propulsion-loss event and your truck was subject to this recall, document the incident and all related service visits.
NHTSA recall 25V769 (GM internal recall N252524530, November 2025) covers 245 GMC Hummer EV SUV units from the 2026 model year, built between July 31 and October 24, 2025. The defect: a supplier (Yazaki North America) had automated crimping equipment offline for maintenance; manual backup crimping produced inconsistent terminal connections on the front passenger airbag wire harness. An improperly crimped connection may interfere with deployment signals, causing the front passenger airbag to fail to deploy in a frontal crash. The remedy is dealer installation of a jumper harness with properly crimped connectors at no charge. Owner notification letters were mailed December 22, 2025. If you have not had this repair performed, contact your GMC dealer immediately and confirm your VIN's status at nhtsa.gov. Given the severity of an airbag non-deployment defect, California law may treat this as a per se safety nonconformity — particularly if combined with other documented repairs on your truck.
This is a known defect documented in GM Technical Service Bulletin MC-11011776 (November 2024), which covers 2024–2025 GMC Hummer EV SUV trucks. A software anomaly in the K241 Powertrain Compartment Cover Module (the frunk controller) can cause the eTrunk to lose its learned position, triggering a persistent 'Hood Ajar' message on the instrument cluster even though the frunk is fully closed. While the hood-ajar fault is active, the vehicle limits speed to approximately 26 mph — a serious hazard if the fault occurs while the truck is traveling at highway speed in a lane of traffic. The TSB directs dealers to remove and reinstall the K241 module fuse, perform a Power Front Compartment Module relearn, and update the K241 software — all covered under warranty at no charge. If this condition recurred after a prior dealer repair, or if it created a crash risk, document the incident with date, location, speed, and whether the frunk was confirmed closed.
It is common, but it is not without lemon law implications. GM issued Technical Service Bulletin 24-NA-143 and Customer Satisfaction Program N242435600 specifically for 2024 GMC Hummer EV SUV trucks, requiring comprehensive vehicle-wide module reprogramming — including chassis control module replacement and a serial data gateway module replacement as prerequisites — before OTA updates could be reliably delivered. Symptoms addressed include random DIC warning messages, Super Cruise unavailability, and headlights that fail to illuminate at dusk (covered under a separate BCM headlight recall). All work is covered at no charge. However, if you have visited the dealer multiple times for the same warning messages or software-related faults, those visits collectively count toward a California lemon law claim — especially if any visit also resulted in a 'could not duplicate' notation.
You may qualify. California's Song-Beverly Consumer Warranty Act presumes a substantial defect when a manufacturer has made two or more unsuccessful repair attempts for a safety-related defect, four or more attempts for any other substantial defect, or when the vehicle has been out of service for 30 or more cumulative days during the warranty period. For the 2024 Hummer EV SUV, the rear drive unit recall (24V320) requires a major drivetrain replacement — a multi-day event that alone can consume significant out-of-service days, especially if combined with software reprogramming visits. For the 2026 model with the airbag recall (25V769), California law treats airbag non-deployment defects as per se safety nonconformities. If you prevail, GM pays your attorney's fees. Most California lemon law cases cost the owner nothing out of pocket. This is general information and not legal advice; results depend on the specific facts of your case.
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