Dorman 946-066 Drive Shaft - Rear

Rear Driveshaft for Silverado and Sierra HD

Dorman 946-066 is a complete rear drive shaft assembly for select heavy-duty GM trucks. It arrives pre-balanced and ready to install, with new yokes, tubes, CV joints, and universal joints to support a direct replacement on the rear driveline.

Compatible with 2007-2010 Chevrolet Silverado 2500 HD and 2007-2010 GMC Sierra 2500 HD rear applications, this aluminum driveshaft is built to match the original length and fitment requirements. The Dorman 946-066 is a practical replacement when the factory shaft is worn, damaged, or out of balance.

Key Features

• Complete rear drive shaft assembly for the driveline
• Pre-balanced for installation readiness
• 100% new yokes, tubes, CV joints, and universal joints
• Aluminum shaft construction
• Drive shaft length: 88.26 in.
• Shaft diameter: 5.73 in.
• Wall thickness: 0.083 in.
• Non-greaseable design
• Fixed overall length; not adjustable

Detailed Description

This Dorman 946-066 rear driveshaft is engineered as a direct replacement for the original rear shaft used on 2007-2010 Chevrolet Silverado 2500 HD and 2007-2010 GMC Sierra 2500 HD models. The assembly uses aluminum shaft material and is supplied pre-balanced to help simplify replacement and reduce the need for additional driveline setup. Because the yokes, tubes, CV joints, and universal joints are all new, the assembly addresses wear across the full shaft rather than only one component. This part cross-references OE number 25827098 for the same application.

Common Issues This Part Can Help Solve

• Vibration from a worn or out-of-balance rear driveshaft
• Clunking or driveline noise from worn joints
• Damage to the shaft tube or yokes
• Excess play caused by deteriorated CV or universal joints
• Fitment problems after driveline wear or previous repair failure

Installation Notes and Tips

Verify rear application, shaft length, and driveline configuration before installation. Confirm the existing shaft matches the 88.26 in. length and fixed-length design, and inspect related driveline components for wear before fitting the replacement. Proper torque procedures and driveline alignment checks should be followed during installation.

Quality Assurance

Dorman supplies this rear driveshaft as a complete replacement assembly with new internal and external wear components, pre-balanced for installation readiness. It is built to replace the original shaft on the listed Silverado 2500 HD and Sierra 2500 HD rear applications.