GMC 20912697 Propeller Shaft Assembly

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Raising the vehicle and supporting it on jackstands, with the front wheels blocked, would remove the rear driveshaft. In order to reinstall in the same position reference marks should be made on the driveshaft and pinion flange and ensure that the transmission is in Neutral with the parking brake off. The drive shaft should be lowered by removing its back u-joint bolts and retainers then slid out of transfer case or transmission. When installing, slide front end into transmission or transfer case then raise rear into position with marks aligned. Afterward, all bolts must be tightened to their proper torque specifications and clamps used to secure bearing caps. For 4WD models' front drive shaft, raise vehicle using jack stands after removal of differential carrier splash shield if any. The boot at the transfer case output shaft should be disengaged and relationship between driveshaft and companion flange marked for future reference. Thereafter disconnect bolts as well as clamps from differential flange while pushing driveshaft toward rear so that it can be separated from this flange before lowering it down to pull out of transfer case. To install, insert a sliding shaft that has splines at its rear through transfer case's output ends while aligning marks attached to them with those found on companion flange's front end. Install clamps together with bolts tightly according to specified torque values whereas push up boot over groove of transfer case output shaft where new clip will have been crimped into place subsequently using clamp-crimping pliers for reinforcement purposes. Lastly, splash shield of front differential carrier should be installed back there again.

The vehicle must be raised and supported on jackstands, with the front wheels blocked. The transmission should be in Neutral with the parking brake off, and reference marks made on the driveshaft and pinion flange to ensure reinstallation in the same position.

During a driveshaft inspection, dents, cracks, and oil leakage should be checked. Additionally, the proper operation of universal joints and center bearings should be ensured.

During a driveshaft inspection, dents, cracks, and oil leakage should be checked. Additionally, the proper operation of universal joints and center bearings should be ensured.

Driveshaft mounting bolts should be checked for tightness.

The rear universal joint bolts and retainers should be removed, and the driveshaft lowered and slid out of the transmission or transfer case.

The vehicle should be raised and supported on jackstands, with the differential carrier splash shield removed if equipped. The boot at the transfer case output shaft should be disengaged and the relationship of the driveshaft to the front differential companion flange marked. The bolts and clamps should be removed from the differential flange, and the driveshaft pushed to the rear and separated from the flange before being lowered and pulled out of the transfer case.

The front differential carrier splash shield should be installed.

A driveshaft is a tube or pair of tubes that transmits power between the transmission and differential.

Driveshaft mounting bolts should be checked for tightness.

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