Why does the Hummer EV crab walk?
CrabWalk† is a unique 4-Wheel Steer mode available on the select GMC HUMMER EV models designed to offer greater vehicle maneuverability when you’re off-roading or parking. The feature allows the angle of the rear wheels to mimic the angle of the front wheels — allowing your vehicle to move more diagonally. Crab walking is a four-wheel steering setting that allows the rear wheels to copy the angle of the front wheels. With the right angle, the vehicle can move laterally.CrabWalk is a revolutionary vehicle feature from GMC, currently available on the 2024 Sierra EV Denali Edition 1 and 2024 HUMMER EV Pickup Truck and SUV.CrabWalk† is a unique 4-Wheel Steer mode available on the select GMC HUMMER EV models designed to offer greater vehicle maneuverability when you’re off-roading or parking. The feature allows the angle of the rear wheels to mimic the angle of the front wheels — allowing your vehicle to move more diagonally.CrabWalk can only be used at speeds below 20 mph. At speeds above 20 mph, the front and rear wheels will no longer turn at the same angle. If you continue to drive above 25 mph for longer than 10 seconds, CrabWalk will disengage and return the system to Automatic 4-Wheel Steering mode.But with Crab Walk, you’re doubling that level of grip while only moving sideways, instead of moving forward and trying to rotate sideways. Backing up to a trailer can also be made easier if there isn’t enough room to turn the truck.
Is CrabWalk a gimmick?
CrabWalk Is More Than a Gimmick Have you ever wondered if a vehicle could move in a totally unconventional way, a different direction completely? Not just around the corner or a sharp turn up in the mountains, but laterally, sideways, diagonally? GMC came up with a clever way to do exactly that. The overall goal of the Hummer CrabWalk Mode is to make it easier to get in and out of tight spaces. Imagine heading to an offroading destination but a couple of boulders or huge trees make it difficult to traverse the terrain. Perhaps two vehicles got a little too close when parallel parking in Tempe.
Why do trucks need to CrabWalk?
When CrabWalk is engaged, all four wheels pivot in the same direction by up to 10 degrees. Then, the wheels turn to move the vehicle diagonally. This keeps the driver from needing to perform a multi-point turn to get around an obstacle. While in CrabWalk mode, you can travel at speeds up to 20 miles per hour. If your speed exceeds 25 miles per hour for more than 10 seconds, CrabWalk will automatically disengage.