General Motors’ latest full-size SUVs are fun off-road, with plenty of traction to get in and out of the rough stuff. However, the way in which these SUVs accomplish this differs between each model line, with the 2021 GMC Yukon offering an electronic limited-slip differential (eLSD), and the 2021 Chevy Tahoe and 2021 Chevy Suburban restricted to a mechanical limited-slip differential (LSD).
As it stands now, the all-new 2021 GMC Yukon, 2021 Chevy Tahoe, and 2021 Chevy Suburban SUVs are equipped as standard with GM’s mechanical LSD, tagged with RPO code G86. However, the 2021 GMC Yukon AT4 and Yukon Denali also offer an eLSD (RPO code G96), a feature not available on the 2021 Chevrolet Tahoe and Suburban.
The G96 eLSD offered on the 2021 GMC Yukon is part of the Premium Capability Package with Active Response 4WD (RPO code Z6E). The package also includes Air Ride Adaptive Suspension (RPO code F47).
The Z6E Premium Capability Package with Active Response 4WD requires the Premium Package (CWM) and the Max Trailering Package (NHT), and is included as part of the AT4 Premium Plus Package (PEH) and Denali Ultimate package (PEC).
Essentially, it comes down to this – while the 2021 GMC Yukon, 2021 Chevy Tahoe, and 2021 Chevy Suburban all offer Magnetic Ride Control and Air Ride Adaptive Suspension, only the Yukon offers Active Active Response 4WD with the G96 eLSD.
For those who may be unaware, the difference between the eLSD and mechanical LSD discussed here can be boiled down to the way in which wheel slip is detected and mitigated, with an eLSD utilizing onboard sensors (vehicle speed, throttle position, steering angle, yaw rate, etc.) to determine the locking torque value, as opposed to a mechanical LSD which uses internal mechanical components to distribute torque and limit wheel slip.
“All-new available Active Response 4WDTM System combines technologies, including an electronic Limited Slip Differential, to continuously monitor road conditions and react to improve traction, handling and overall control,” GM explains.