GMC Hummer EV, GMBT1 (USA / CAN)

Coolant capacity & service interval

GMC Hummer EV, GMBT1 (USA / CAN) requires coolant with a capacity of 20,7 liters. Service intervals occur at 150000 miles or 60 months. The data covers 3 configurations.

The configuration chart below lists fill volumes and service intervals for each engine and trim variant.

TypeSpecifications
  • Hummer EV SUV (466 kW) (2023- )
  • Electric motor/system
  • Use: Normal
  • Capacity 20,7 liter
  • Change 150000 miles/ 60 months
  • Hummer EV SUV (619 kW) (2023- )
  • Electric motor/system
  • Use: Normal
  • Capacity 20,7 liter
  • Change 150000 miles/ 60 months
  • Hummer EV Pickup (2022- )
  • Electric motor/system
  • Use: Normal
  • Capacity 20,7 liter
  • Change 150000 miles/ 60 months

Additional Notes

  • The GMC Hummer EV electric motor/system cooling circuit carries a capacity of 20.7 liters across all three listed configurations, which is a notably large volume reflecting the scale of thermal management required for high-output electric drivetrains.
  • The Hummer EV Pickup and both SUV variants share an identical coolant change interval of 150,000 miles or 60 months under normal use conditions, placing the service interval at a relatively extended schedule compared to many conventional internal combustion cooling systems.
  • The 60-month time limit runs parallel to the mileage threshold, meaning whichever of the two conditions is reached first would govern when a coolant change is due under normal use.
  • Both the 466 kW and 619 kW SUV variants, introduced from 2023, carry the same 20.7-liter capacity as the Pickup, indicating no differentiation in cooling system volume between the two SUV power outputs.
  • The 20.7-liter figure applies specifically to the electric motor/system cooling circuit, distinguishing it from any other thermal circuits that may exist separately within the vehicle architecture.

Other Systems