2024 GMC Hummer EV Pickup

The 2024 GMC Hummer EV Pickup is an all-electric supertruck that generates significant buzz due to its impressive capabilities and unique design. It boasts up to 1,000 horsepower and 11,500 lb-ft of torque in its tri-motor configuration, enabling it to accelerate from 0 to 60 mph in around 3 seconds. A less powerful, dual-motor option is also available. While owners appreciate its bold styling, off-road prowess, and cutting-edge technology, some common complaints include charging infrastructure limitations, battery range concerns, and occasional software glitches. Let’s dive into the specific issues reported by owners.

Electric Motor

Tri-Motor e4WD System

• Reduced Propulsion/Service High Voltage Charging System
  • Description/Symptoms: Some owners have reported instances where the vehicle displays a “Reduced Propulsion” message or “Service High Voltage Charging System” error. This can result in significantly reduced power output or an inability to charge. The underlying cause is often traced to software glitches, battery management system (BMS) errors, or connector issues.
  • Solution: Software updates can sometimes resolve the issue. In other cases, a dealer visit is required to diagnose and potentially replace faulty connectors or components within the high-voltage system.
  • Estimated Cost to Fix: $0 (if covered under warranty with a software flash), $100 - $1,000+ (if component replacement is necessary and not covered under warranty).
  • Recalls: None Found

Battery

• Battery Cell Imbalance
  • Description/Symptoms: Reports suggest that some Hummer EVs experience battery cell imbalance. This occurs when individual cells within the battery pack have different voltage levels, impacting overall battery capacity and range. Symptoms can include reduced range, slower charging speeds, and error messages.
  • Solution: The recommended solution is a battery pack rebalancing procedure performed by a certified GMC technician. In severe cases, battery module replacement may be necessary.
  • Estimated Cost to Fix: $0 (if covered under warranty), $500 - $5,000+ (depending on the extent of the damage and if module replacement is required. The whole battery pack replacement can be higher.)
  • Recalls: None Found

Electrical System

• Infotainment System Freezing/Crashing
  • Description/Symptoms: Owners have reported instances of the infotainment system freezing, crashing, or becoming unresponsive. This can affect navigation, audio, and vehicle settings. This can be related to a software glitch, or insufficient RAM.
  • Solution: A software update from GMC is often the solution. In some cases, a hard reset or replacement of the infotainment module may be necessary.
  • Estimated Cost to Fix: $0 (if covered under warranty or solved by software update), $500 - $1,500+ (for module replacement).
  • Recalls: None Found
• Driver Assist System Malfunctions (Super Cruise, Lane Keep Assist, etc.)
  • Description/Symptoms: Some owners have reported intermittent issues with the driver-assist systems, such as Super Cruise disengaging unexpectedly, lane keep assist failing to function properly, or adaptive cruise control experiencing erratic behavior.
  • Solution: Diagnosis often involves checking sensor calibration, software updates, and inspecting wiring connections. In some cases, sensor replacement may be required.
  • Estimated Cost to Fix: $0 (if covered under warranty), $200 - $1,000+ (depending on the specific component and labor involved).
  • Recalls: None Found
• Software Glitches/Connectivity Issues
  • Description/Symptoms: Various software glitches, including issues with over-the-air updates, Bluetooth connectivity problems, and app integration issues, have been reported.
  • Solution: Software updates from GMC are the primary solution.
  • Estimated Cost to Fix: $0 (usually resolved with a software update).
  • Recalls: None Found

Suspension

• Air Suspension Issues (if equipped)
  • Description/Symptoms: Some Hummer EVs equipped with the air suspension system have experienced problems with the system leveling, compressor failure, or air leaks. This can result in uneven ride height or a malfunctioning suspension system.
  • Solution: Diagnosis involves inspecting the air lines, compressor, and suspension components for leaks or damage. Replacement of faulty components is often necessary.
  • Estimated Cost to Fix: $0 (if covered under warranty), $500 - $2,000+ (depending on the component and labor).
  • Recalls: None Found

Exterior

• Tri-Fold Tailgate Issues
  • Description/Symptoms: Some owners have reported issues with the operation of the tri-fold tailgate, including difficulty opening or closing, misaligned panels, or malfunctioning latches.
  • Solution: Adjustment or replacement of the tailgate components may be necessary.
  • Estimated Cost to Fix: $0 (if covered under warranty), $200 - $1,000+ (depending on the severity of the problem and the parts required).
  • Recalls: None Found
• Sky Panel Leaks
  • Description/Symptoms: Some owners have reported that the removable sky panels are prone to leaking during heavy rain or car washes.
  • Solution: This often involves resealing the panels or replacing the weather stripping.
  • Estimated Cost to Fix: $0 (if covered under warranty), $100 - $500+ (depending on the extent of the leak).
  • Recalls: None Found

Interior

• Speaker Issues (popping/blown speaker)
  • Description/Symptoms: Owners have reported issues with their speakers having a popping sound or being blown.
  • Solution: Diagnosis involves testing the speaker. If the speaker is blown, it needs to be replaced.
  • Estimated Cost to Fix: $0 (if covered under warranty), $200 - $500+ (depending on the speaker.)
  • Recalls: None Found

Summary

The 2024 GMC Hummer EV Pickup presents a mix of innovative technology and potential teething problems. While its electric powertrain delivers impressive performance, software glitches and battery-related issues appear to be relatively common. Suspension and exterior issues are also reported but less frequent. The cost of repairs can vary significantly depending on the severity of the problem and warranty coverage. Given the complexity of the vehicle, potential buyers should be aware of these potential issues and factor them into their ownership considerations. While some issues are minor inconveniences, others could lead to significant repair costs.