2026 GMC Hummer EV

Owners who placed reservations received no follow-up communication from GMC or dealers, including build timelines, feature changes, marketing, configurator access, or test drive opportunities. This le...

The owner's manual fails to clearly explain how to set the swing gate to a custom position using the DIC, leaving owners unable to adjust it after dealer resets.

Instructions for storing sky panels in the frunk are unclear in documentation, causing owners to stack them incorrectly and struggle to close it.

GM's extended warranty excludes software updates, charging owners for paid dealer labor each time.

The advertised phone-as-key feature has not been delivered via software update, despite promises.

Dealerships provide little to no updates on repair status, timelines, or loaner policies, requiring GM intervention; this persists even after payment.

Dealerships withhold delivery after full payment due to undisclosed stop-sales, forcing owners to incur costs without vehicle access.

Dealerships wrongly claim 2025 models don't need multi-module updates despite evidence like Android 10, as they only check recalls not TSBs.

Owners reported no OTA software updates for over a year, missing features and polish; dealers instructed not to update unless issues arise. OTA updates are supported on Hummer EV.

GM does not promptly notify Hummer EV owners about fixes, updates, issues, or OTA procedures, remaining 'radio silent.'

Essential features may be placed behind future subscription paywalls without clear disclosure at purchase.

GM provides at least six separate, hard-to-navigate privacy statements for different US services, obscuring data practices from buyers.

The Driver Assist system provides safety features like lane keeping and adaptive cruise control, but owners report constant or random 'Service Driver Assist' or similar messages appearing on startup o...

Lane Keep Assist is a driver aid that helps maintain lane position, but owners complain it causes unpredictable drifting, bobbing, or fighting the driver, persisting even after alignment fixes.

Pedestrian warning sounds are safety alerts emitted at low speeds to alert nearby people, but owners find them excessively loud and intrusive in the cabin, especially under 23 mph or when stopped.

Reverse pedestrian warnings are amplified safety noises for backing up, described by owners as sounding like a nuclear reactor meltdown, drawing unwanted attention and impossible to ignore.

Seatbelt reminders chime to encourage buckling up, but in the Hummer EV they continue excessively for minutes even at low volume, and require buckling to shift gears even in driveways.

Super Cruise is GM's hands-free driving system, but owners report the steering wheel jiggling or jittering noticeably during use.

Reverse sensors detect obstacles when backing up to prevent collisions, but Hummer EV owners find them too sensitive, triggering alerts continuously.

The security alarm system triggers unexpectedly without cause, startling owners.

Various in-car beeps and chimes persistently annoy owners without specifics on type.

The Hummer EV's large touchscreen infotainment system, running Google-based software, frequently lags, freezes, or responds slowly, especially at startup or with navigation. Owners report choppy perfo...

Newer Hummer EV models lack support for Apple CarPlay and Android Auto, forcing use of GM's native infotainment system. This is a deliberate design choice by GM, removed for 2026 models.

The front trunk (frunk) lid does not auto-close with a single button press; owners must hold the button down until fully closed. This differs from other GMC vehicles where a tap suffices.

The built-in Homelink universal garage door opener fails to sync with some garage systems despite following setup steps. Owners report signal detection but no door operation.

Battery preconditioning for supercharging is greyed out and won't activate manually in cold weather; requires setting a charger as GPS destination. Common in Canadian winters.

The center console wireless phone charger starts charging but frequently drops connection, even after repositioning. Owners note improvements in later models.

The steering wheel has an excessive number of buttons, making it overwhelming to learn and use effectively.

The center console phone charger does not secure phones during acceleration, causing them to shift and lose position.

The 'all windows down' button lowers most windows but excludes the rear window on 2023 models, possibly a software glitch.

Seat memory settings and driver profiles do not integrate seamlessly, causing confusion in saving and recalling preferences.

Activating heated and ventilated seats requires a cumbersome multi-finger 'piano key' process on the controls.

Windows auto-down fully but lack auto-up function, requiring manual holding.

Climate control buttons stay active until pressed again to cancel, making operation frustrating.

Side mirrors do not extend far enough or adjust high enough, blocking rear visibility.

My Mode drive settings cannot be adjusted while the vehicle is in motion; the system locks access.

The accelerator pedal's angle causes foot fatigue and discomfort on long drives.

Turn signal side cameras only activate when a trailer is plugged in, not for normal use.

The Hummer EV's over-the-air (OTA) software update system has been paused by GM for extended periods in the past, forcing owners to visit dealers for updates lasting 8+ hours. Owners reported no updat...

OTA updates frequently cause malfunctions in vehicle systems like auto wipers, SuperCruise, one-pedal driving, Google Assistant volume, home screen layout, and ESC after installation. Owners hesitate ...

Owners complain of no OTA-delivered new features or software development since launch, missing additions like camp mode, dash cam, YouTube app, battery temp display, and geofencing. Support feels none...

The vehicle's terms allow OnStar or GM to remotely push OTA software updates or changes without owner notice or consent, potentially erasing user data. This lack of control concerns owners amid other ...

The GMC Hummer EV's connected systems, including OnStar and the myGMC app, collect broad personal information such as name, address, geolocation, sensitive traits like race and medical conditions, bio...

OnStar and vehicle sensors continuously track driving details like VIN, precise geolocation, route history, speed, braking/swerving, camera images, sensor data, and infotainment usage for diagnostics,...

GM shares and sells collected personal and vehicle data with third-party partners like SiriusXM, insurers, and marketers for advertising and other business purposes. This practice raises concerns abou...

OnStar frequently provides location and other data to police, ICE, and government agencies, often without user notification. Owners worry about unrestricted access by authorities.

Consent to extensive data collection is obtained through complex, lengthy privacy policies presented at purchase or app setup, which most users skip reading. This makes meaningful opt-in impossible fo...

Outside CCPA/GDPR regions, users have no way to request deletion of stored personal and vehicle data via the myGMC app or other means, trapping information indefinitely. Biometrics are retained up to ...

The GMC Hummer EV's OnStar system allows General Motors to remotely access, modify, or update the vehicle's software and systems. Owners complain that this occurs without additional notice or consent,...

Early Hummer EV software glitches cause the vehicle to suddenly shut down or become unresponsive, stranding owners in dangerous situations like intersections and preventing basic functions like openin...

SuperCruise, the hands-free driving assistance system, frequently fails to engage or work due to software and mapping issues, requiring multiple dealer visits despite replacements and updates.

The main infotainment screen and related displays freeze, crash, go blank, or become unresponsive while driving, often requiring a full vehicle restart to recover.

The built-in GPS and navigation system stops working, crashes, or becomes unresponsive, sometimes requiring a steering wheel reset or restart, and displays incorrectly.

Vehicle cameras randomly glitch out and become inoperable, affecting visibility features.

The Kicker tailgate audio system unexpectedly connects to phones via Bluetooth and turns on by itself.

The infotainment screen develops burn-in marks despite proper maintenance.

Software issues prevent the vehicle from shifting out of park, requiring towing to a dealer.

Buttons for starting the vehicle, opening the frunk, and rear hatch only work about 90% of the time due to software inconsistencies.

The displays' backlighting stops working in night mode.

Super Cruise is GM's hands-free highway driving assistance system that requires an active subscription and mapped roads. Owners report it showing 'not available' errors despite active subscriptions, w...

Features like Super Cruise, OnStar connectivity, navigation, and WiFi hotspot are free for an initial 3-year trial but then require ongoing monthly payments around $25-29. Owners resent paying indefin...

OnStar connected services are bundled as a non-optional $1,500 'forced option' added to the sticker price of some Hummer EVs, requiring upfront payment even if owners never activate or use the service...

Owners fear GM will introduce subscriptions for paid-for hardware and features like 4-wheel steering, WTF/Extract/Crab modes, off-road maps, Summon, Dog/Sentry modes, and even non-connected items like...

Google-based infotainment and navigation require an active data package subscription; without it, features degrade, becoming sluggish with useless offline navigation.