The propeller shaft is a hollow shaft or tube that connects the transmission to the differential. The propeller shaft connects to the transmission output shaft with an internally splined slip yoke and universal joint, and connects to the rear axle pinion shaft with a universal joint mated to the pinion shaft flange.

Propeller shafts have universal joints at each end in order to accommodate driveline angle variations between the transmission and rear axle, and the rear axle position caused by suspension motion. All propeller shafts are the balanced tubular type.

Vehicles with the 5.7L (VIN G) engine, and either the 6-speed (MM6) or the automatic transmission (M30), or the 3800 (VIN K) engine and the automatic transmission (M30), are equipped with a one-piece propeller shaft constructed of either stamped steel or aluminum.

Vehicles equipped with the 3800 (VIN K) engine and the 5-speed manual transmission (M49) are equipped with a two-piece propeller shaft assembly. The two-piece shaft assembly consists of a front propeller shaft, a rear propeller shaft, and a support bearing. The support bearing prevents angular movement or "whipping" of the propeller shaft. The support bearing is a sealed, ball bearing type mounted in a rubber cushion attached to the torque arm.

The support bearing is prelubricated and sealed by the manufacturer.

The support bearing is not serviceable, and must be replaced as a unit.

A universal joint is located on the front and rear portions of the rear propeller shaft, and the forward portion of the front propeller shaft. The rear propeller shaft has an internal spline which fits over the external spline of the front propeller shaft, near the support bearing. The universal joints allow for the driveline angle differences between the transmission and the rear axle. The universal joints on the rear propeller shaft allow for driveline angle changes due to rear suspension movement, and allow the uninterrupted transfer of engine power to the rear axle.