Description: Without crew cab. Tahoe, Yukon, Escalade. Serviced with axle assy. All models. 1/2 ton. 4wd, 1500. Yukon XL, Suburban. Avalanche, Escalade EXT. Escalade ESV. Silverado, sierra hybrid. With crew cab. 134 wheelbase. Connects the axles to your vehicle's wheels Essential for transferring torque from your vehicle's transmission to its wheels at a stable speed This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors