Trailer Towing - GMC HUMMER EV 2022 Owner's Manual

270 Driving and Operating
6. Stop and have someone pick up and
store the chocks.
7. Slowly pull the trailer from the water.
8. Once the vehicle and trailer have been
driven from the sloped part of the boat
ramp, the vehicle can be shifted from
four-wheel-drive. Shift into the drive
mode that is appropriate for the road
conditions.
Caution
If the vehicle tires begin to spin and the
vehicle begins to slide toward the water,
remove your foot from the accelerator
pedal and apply the brake pedal. Seek
help to have the vehicle towed up
the ramp.
Maintenance when Trailer Towing
The vehicle needs service more often when
used to tow trailers. See Maintenance
Schedule 0 362. It is especially important to
check the cooling system and brake system
before and during each trip.
Check periodically that all nuts and bolts on
the trailer hitch are tight.
Cooling the Vehicle when Trailer Towing
The cooling system may temporarily
overheat during severe operating conditions.
See Cooling System 0 299.

Trailer Towing

Caution
Towing a trailer improperly can damage
the vehicle and result in costly repairs
not covered by the vehicle warranty. To
tow a trailer correctly, follow the
directions in this section and see your
dealer for important information about
towing a trailer with the vehicle.
Trailering is different than just driving the
vehicle by itself. Trailering means changes in
handling, acceleration, braking, and
durability. Successful, safe trailering takes
correct equipment, and it has to be used
properly.
The following information has many
time-tested, important trailering tips and
safety rules. Many of these are important
for your safety and that of your passengers.
Read this section carefully before pulling a
trailer.
Trailer Weight
Warning
Never exceed the towing capacity for
your vehicle.
Safe trailering requires monitoring the
weight, speed, altitude, road grades, outside
temperature, and how frequently the vehicle
is used to tow a trailer.
Trailer Weight Ratings
When towing a trailer, the combined weight
of the vehicle, vehicle contents, trailer, and
trailer contents must be below all of the
maximum weight ratings for the vehicle,
including:
Gross Combined Weight Rating (GCWR)
Gross Vehicle Weight Rating (GVWR)
Maximum Trailer Weight Rating
Gross Axle Weight Rating-Rear (GAWR-RR)
Maximum Trailer Tongue Weight Rating
See Weight-Distributing Hitch and
Adjustment under Towing Equipment 0 273
to determine if equalizer bars are required
to obtain the maximum trailer weight
rating.