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ABOUT 4-WHEEL STEER
DESIGNED TO OFFER MORE MANEUVERABILITY
Available 4-Wheel Steer is designed to offer greater vehicle maneuverability while parking at low speeds and on tight off-road trails. The system increases low-speed agility and allows the driver to achieve a tighter turn circle. 4-Wheel Steer is also designed to help improve vehicle stability when towing a trailer.
This feature also includes GMC
The 4-Wheel Steer feature has three modes: Automatic, CrabWalk, and Off.
ABOUT 4-WHEEL STEER
4-Wheel Steer is designed to offer more maneuverability in a variety of driving situations by syncing your front and rear tires in specific ways. The feature functions differently, depending on your drive mode. 4-Wheel Steer is engaged on your vehicle in Automatic Mode by default.
In Automatic Mode at low speeds, your vehicle’s rear tires will turn in the opposite direction of the front tires for maximum maneuverability. You may see this referred to in your Owner’s Manual as “out-of-phase” turning. At higher vehicle speeds, the rear wheels steer in the same direction as the front wheels to improve handling stability.
The angle at which your rear tires turn depends on your front steering angle and the vehicle’s speed.
There is a limit to the angle the rear wheel tires turn — the max angle depends on your vehicle.
HOW TO TURN REAR STEERING OFF
To turn Rear Steering off, you have to be driving slower than 1.2 mph (2 kph).
Open the Controls app on your infotainment screen, then tap the Rear Steering button and select Off Mode. Press either button again to turn Rear Steering back on.
On certain GMC HUMMER EV models, press the physical 4-Wheel Steer button on the left side of the Driver Mode Control dial.
OFF-ROAD MODE AND TERRAIN MODE
Some vehicles offer Off-Road Mode and Terrain Mode. At lower vehicle speeds, Off-Road Mode uses a different out-of-phase steering calibration than the default Automatic Mode, offering more maneuverability on rough terrain.
Terrain Mode rear steering features similar operation as Off-Road Mode (rear wheels turn out of phase with the front at lower vehicle speeds). However, the ratio of front-to-rear steering angle is further increased in Terrain Mode, delivering even more responsive steering.
CRABWALK
CrabWalk is a 4-Wheel Steer setting that allows the rear wheels to turn at the same angle as the front wheels. This allows you to move your vehicle diagonally, offering flexibility in both off-roading situations and various parking scenarios.
For example, if the rear of your vehicle is facing an obstacle on the left side, and you need to turn your vehicle to the right to get around it, you might risk colliding with the obstacle in Automatic Mode.
In CrabWalk, you can move the vehicle diagonally to help avoid collisions with objects within your turning radius.
How to Enter CrabWalk
- The following vehicle conditions must be true prior to pressing the button:
- Vehicle speed less than 1.2 mph (2 kph)
- Steering Wheel is not in motion
- Super
Cruise™† is inactive
- Open the Controls app on your infotainment screen.
- Then, tap the CrabWalk
- GMC HUMMER EV models will automatically launch Surround Vision when CrabWalk is engaged.
- On certain GMC HUMMER EV models, press and hold the physical 4-Wheel Steer button on the Driver Mode Control dial until the animation on the infotainment screen shows the CrabWalk feature is fully powered up.
As with other 4-Wheel Steer modes, there is a limit to how far your rear wheels will turn — the max angle depends on your vehicle
If you drive in CrabWalk above 25 mph for more than 10 seconds, 4-Wheel Steer will go back to Automatic Mode.
How to Turn CrabWalk Off
To disengage CrabWalk Mode, you can either tap the Crab smart icon on the left side of your infotainment screen or turn the feature off through the Controls app by tapping the CrabWalk Mode button. On certain GMC HUMMER EV models, you can press the physical 4-Wheel Steer button at any time.
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To find out if your vehicle has this feature, contact your dealer or refer to your vehicle’s equipment list. Please check your Owner’s Manual for more information about features.
