When rear-wheel slippage is detected at lower speeds, the GM segment-exclusive automatic locking rear differential, allows additional traction at lower speeds on snow, mud, and ice. If one of the rear wheels has traction while the other does not, the locking rear axle automatically sends power to the wheel with grip to move the vehicle.
Locking rear differential benefits include enhanced performance for on- and off-road driving and towing, full lockup for maximum drive power to both rear wheels, fully automatic engagement and speed-sensitive actuation, which provides axle lockup when one wheel spins faster than the other.
Engine: Vortec 6.2L V8 with VVT and 403 hp.
The Vortec 6.2L V8 with Variable Valve Timing delivers 403 hp at 5700 rpm and 417 lb.-ft. of torque at 4300 rpm.
Transfer case: all-wheel drive, electronically controlled (Click here for important details)
The all-wheel-drive system balances the torque between the front and rear axles using a transfer case that operates similarly to an automatic transmission. All-wheel drive is always activated, so you don't have to fuss with controls to enjoy the benefits of improved handling and control.