Propeller Shaft Description & Operation: Notes
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, 2002 Chevrolet Cab & Chassis Silverado, and 2001 GMC Sierra. However, it is still accessible from the selected car via links, so may be relevant.
The propeller shaft is tube with universal joints at both ends which do not require periodic maintenance, that transmit power from the transfer case or transmission output shaft to the differential.