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GMC · Known Issues

2025 GMC Hummer EV SUV Problems: 4 Known Issues

2025 model year · 280+ owner reports · Updated September 2026

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Issue summary

According to Au7o's analysis of 280+ owner reports, the 2025 GMC Hummer EV SUV has 4 documented known issues. None of the listed issues is rated critical; this is not a complete reliability assessment. The most commonly reported issue is Infotainment System Software Bugs and Screen Freezing with 120 owner reports. DIY maintenance guides at au7o.io.

In This Article

  • Hummer EV SUV Electrical3
  • Hummer EV SUV Suspension1
  • Recalls2
  • FAQ
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In This Article

  • Electrical3
  • Suspension1
  • Recalls2
  • FAQ

All 4 Known Issues

Filter:
ALL YEARS202620252024
Community reported
120 owners

On the 2024-2026 GMC Hummer EV SUV, the Hummer EV SUV's 13.4-inch infotainment touchscreen and 12.3-inch driver information center experience software bugs including screen freezing, random reboots, and unresponsive touch inputs. The system controls critical vehicle functions including charging schedules, suspension mode selection, CrabWalk, and Extract Mode. Early software versions had particular issues with Bluetooth connectivity, Apple CarPlay/Android Auto disconnections, and the rear camera feed freezing.

Common Symptoms

  • Touchscreen frozen and unresponsive
  • System rebooting while driving
  • Apple CarPlay or Android Auto disconnecting frequently
  • Rear camera feed frozen or black
  • Climate controls inaccessible during screen freeze

How to Fix

Ensure the latest OTA software update is installed — GM has released multiple updates addressing infotainment stability. Perform a system reset by holding the power/volume button for 10 seconds. If issues persist, the dealer can perform a full system reflash. Some early production units required infotainment module hardware replacement under warranty.

Typical repair cost:$0 - $0

Research This Issue

Based on 120 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence120 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
Community reported
95 owners

On the 2024-2026 GMC Hummer EV SUV, some Hummer EV SUVs experience slower-than-expected DC fast charging speeds and intermittent charge port communication failures. The vehicle's 800V architecture should support 350 kW charging, but software limitations and battery temperature management can reduce speeds significantly. The charge port door actuator can also fail, preventing the port from opening. CCS connector fit issues at some public charging stations cause the vehicle to reject the charge session.

This issue also affects: Chevrolet Silverado EV

Common Symptoms

  • DC fast charging capping at 100-150 kW instead of 350 kW
  • Charge port door not opening
  • Charging session ending prematurely
  • Unable to initiate charging at some stations
  • Battery preconditioning not activating before arrival at charger

How to Fix

Pre-condition the battery for DC fast charging by enabling the "target charge station" feature in navigation — this warms the battery to optimal temperature before arrival. Ensure the latest OTA software update is installed, as GM has improved charging algorithms. For charge port door issues, the actuator can be replaced under warranty. Try multiple charger brands if one consistently fails to connect.

Typical repair cost:$0 - $500

Research This Issue

Based on 95 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence95 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026

On the 2024-2025 GMC Hummer EV SUV, dC fast charging sessions terminate prematurely or fail to initiate at certain charger networks. Communication errors between the vehicle and charger can prevent charging above 80% or cause sessions to stop repeatedly.

This issue also affects: Chevrolet Volt

Common Symptoms

  • Charging session stops unexpectedly
  • Unable to initiate DC fast charge
  • Charging speed drops to zero
  • Error message on charger screen

How to Fix

Ensure vehicle software is updated. Try different CCS charger brands if one consistently fails. Precondition the battery before DC fast charging by using the "Target Charger" feature in navigation. Dealer can update the charge port module firmware.

Typical repair cost:$0 - $400

Research This Issue

GoogleRedditYouTubeNHTSA
Community Reported
Medium Confidence
Community reported
65 owners

On the 2024-2026 GMC Hummer EV SUV, the Hummer EV SUV's adaptive air suspension system, which offers up to 16 inches of ground clearance in Extract Mode, can develop calibration errors that prevent the system from reaching full height. The height sensors, air compressor, and air springs must all function in concert. Software bugs can cause the system to display incorrect ride height or refuse to enter Extract Mode. The compressor can also overheat from repeated height adjustment cycles, entering a cooldown period that locks out suspension adjustments.

This issue also affects: Chevrolet Malibu, Chevrolet Cobalt, Chevrolet SS

Common Symptoms

  • Extract Mode not reaching full height
  • Suspension malfunction warning message
  • Vehicle sitting unevenly
  • Ride height adjustments not responding
  • Compressor cooldown message after multiple height changes

How to Fix

GM has released software updates that improve air suspension calibration accuracy. Visit the dealer for recalibration using the GDS2 diagnostic tool. If the compressor overheats, allow it to cool for 30 minutes before attempting further adjustments. For persistent Extract Mode failures, the height sensors may need recalibration or replacement.

Typical repair cost:$0 - $1,500

Research This Issue

Based on 65 owner reports

GoogleRedditYouTubeNHTSA
Community Reported
Low Confidence65 owner reportsLast reported by owners Mar 2026Reviewed Mar 2026
NHTSA Recalls2 recalls

AIR BAGS:FRONTAL

General Motors, LLC (GM) is recalling certain 2026 GMC Hummer EV Pickup and SUV vehicles. The front passenger air bag connection may have an improperly crimped wire, which can result in the air bag failing to deploy as intended.

Campaign #25V76900006/11/2025

EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

General Motors has decided that certain 2027 Chevrolet Bolt EV, 2025-2026 Cadillac OPTIQ, Chevrolet Colorado, Equinox EV, GMC Canyon, 2026 Buick Enclave, Envision, Cadillac CT5, Escalade, Escalade ESV, Escalade IQ, Escalade IQL, LYRIQ, VISTIQ, Chevrolet Blazer EV, Corvette Convertible, Corvette Coupe, Corvette Convertible E-Ray, Equinox, Silverado 1500, 2500, 3500, Silverado EV, Suburban 1500, Tahoe, Traverse, GMC Acadia, Hummer EV Pickup, Hummer EV SUV, Sierra 1500, 2500, 3500, Sierra EV, Terrain, Yukon, and Yukon XL vehicles. The radio may not have been set to the correct status to download the electronic owner's manual during production. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, “Occupant Protection.”

Campaign #26V11400026/02/2026

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

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Other GMC Models

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Frequently Asked Questions

What are the most common GMC Hummer EV SUV problems?

According to Au7o's analysis of 280+ owner reports, the 2025 GMC Hummer EV SUV has 4 documented issues. The most frequently reported are: Infotainment System Software Bugs and Screen Freezing, DC Fast Charging Speed Reduction and Charge Port Issues, Adaptive Air Suspension Calibration Errors and Extract Mode Failures. None are rated critical, but regular maintenance is recommended.

Is the GMC Hummer EV SUV reliable?

The 2025 GMC Hummer EV SUV has 4 known issues documented across 280+ owner reports. None of the matching records is rated critical; this is not a complete reliability assessment. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common GMC Hummer EV SUV problems?

Repair costs for known GMC Hummer EV SUV issues range from $0 to $1,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2024-2026 GMC Hummer EV SUV Infotainment System Software Bugs and Screen Freezing?

The Hummer EV SUV's 13.4-inch infotainment touchscreen and 12.3-inch driver information center experience software bugs including screen freezing, random reboots, and unresponsive touch inputs. The system controls critical vehicle functions including charging schedules, suspensio… Repairs typically run $0-$0. Severity: medium.

What is the 2024-2026 GMC Hummer EV SUV DC Fast Charging Speed Reduction and Charge Port Issues?

Some Hummer EV SUVs experience slower-than-expected DC fast charging speeds and intermittent charge port communication failures. The vehicle's 800V architecture should support 350 kW charging, but software limitations and battery temperature management can reduce speeds significa… Repairs typically run $0-$500. Severity: medium.

What is the 2024-2026 GMC Hummer EV SUV Adaptive Air Suspension Calibration Errors and Extract Mode Failures?

Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.

Data sourced from 280+ owner reports, NHTSA recalls, TSBs, and automotive forums.

The Hummer EV SUV's adaptive air suspension system, which offers up to 16 inches of ground clearance in Extract Mode, can develop calibration errors that prevent the system from reaching full height. The height sensors, air compressor, and air springs must all function in concert… Repairs typically run $0-$1,500. Severity: medium.

What is the 2024-2025 GMC Hummer EV SUV DC Fast Charging Session Interruption?

DC fast charging sessions terminate prematurely or fail to initiate at certain charger networks. Communication errors between the vehicle and charger can prevent charging above 80% or cause sessions to stop repeatedly. Repairs typically run $0-$400. Severity: medium.