Raise the rear of the vehicle and support it securely on jackstands. Crawl under the vehicle to visually inspect the driveshaft for any dents or cracks in the tubing; if any are found, the driveshaft must be replaced. Check for oil leakage at the front and rear of the driveshaft, as leakage where it enters the transmission indicates a defective rear seal, while leakage at the differential suggests a defective pinion seal. With an assistant turning the rear wheel to rotate the driveshaft, ensure the
Universal Joints operate properly without binding, noise, or looseness. The universal joints can also be assessed with the driveshaft motionless by gripping either side of the joint and attempting to twist it; any movement indicates considerable wear. Additionally, lifting up on the shaft will reveal movement in the universal joints. Finally, check the driveshaft mounting bolts at the ends to ensure they are tight.