Chevrolet Trucks G80 Rear Differential: Feature Spotlight - GM Authority (blog)

That’s where the Chevrolet trucks G80 locking rear-differential comes in handy. Simply, the G80 differential locks automatically if one tire begins to spin, thus enabling both wheels to propel the truck forward. This particular locking differential provides superior traction over a traditional limited-slip differential in most situations, according to Chevrolet. The system utilizes an open differential until the system recognizes excessive slip at one wheel, at which point it automatically triggers the locking mechanism. This provides optimal amounts of torque, rather than a limited-slip differential which may allow the wheels to turn at different rates in a low-traction environment. The G80 technology was pioneered 40 years ago, and with incremental improvements along the way, has become a staple across the Chevrolet truck lineup. That includes the 2015 Chevrolet Silverado family, standard on LTZ and Z71 versions of the Silverado 1500 and all Silverado 2500 and 3500 HDs, and the 2015 Chevrolet Colorado , standard on the Z71. Additionally, Chevrolet’s body-on-frame Tahoe and... Source: gmauthority.com