GMC Hummer EV 2023 Owner's Manual page 333

GMC Hummer EV Owner Manual (GMNA-Localizing-MidEast-16569278) -
2023 - CRC - 1/25/23
Additional Required Services
Every 10,000 km
Replace passenger compartment air filter.
Or every 12 months, whichever comes
first. More frequent passenger
compartment air filter replacement may
be needed if driving in areas with heavy
traffic, poor air quality, high dust levels,
or environmental allergens. Passenger
compartment air filter replacement may
also be needed if there is reduced airflow,
window fogging, or odors. Your GM
dealer can help determine when to
replace the filter.
Every 240,000 km
Drain and fill coolant circuits. Or every
five years, whichever comes first. See
Cooling System 0 276.
Severe Conditions Requiring More
Frequent Maintenance*
Mainly driven in heavy city traffic in hot
weather.
Mainly driven in hilly or mountainous
terrain.
Frequently towing a trailer.
Used for high speed or competitive
driving.
Used for taxi, police, or delivery service.
Additional Required Services Severe
Service
Every 70 000 km
Change electric drive unit fluid. See
Recommended Fluids and Lubricants
0 334.
Owner Checks and Services
At least twice a year, have underbody
flushing service performed. See
"Underbody Maintenance" in Exterior Care
0 322.
Service and Maintenance 333