GM 12562646
Drive Shaft

Vehicle support and raising becomes the first step before starting a propeller shaft replacement process. Before removing the propeller shaft-to-transfer case flange bolts you must mark the propeller shaft at its transfer case flange. Mark the propeller shaft at the torque tube flange then remove all propeller shaft-to-torque tube flange bolts. Steer the propeller shaft so it sits at the back of the vehicle before taking it out. Assembly of the propeller shaft begins by fitting its rear end to the torque tube flange where reference marks on both components need to align. The threads of components need Thread-lock treatment from GM P/N United States 12345493 P/N Canada 10953488 or equivalent solution before final assembly takes place. The propeller shaft-to-torque tube bolts should be hand-installed so the proper bond exists while the crescent washers need to rest between pairs of bolts. Push the propeller shaft toward the back of the vehicle while installing it to the transfer case flange to achieve proper reference mark alignment. Install propeller shaft-to-transfer case bolts with crescent washers between every pair of bolts then cross-tighten them to 33 Nm (24 ft. lbs.). Afterward the technician should lower the vehicle before performing a cross sequence tightening process of the propeller shaft to torque tube bolts with a torque value of 33 Nm (24 ft. lbs.).

A replacement process for the propeller shaft begins with vehicle lifting and support. Make reference marks on the propeller shaft at its transfer case flange before unbolt the propeller shaft-to-transfer case flange bolts. After properly marking the propeller shaft at its torque tube flange you can remove propeller shaft-to-torque tube flange bolts. Pull the propeller shaft toward the rear part of the vehicle before taking it out. Start propeller shaft installation by connecting it to the torque tube flange then align the reference marks found on both components. Before the assembly process users should clean the threaded sections and apply threadlocker GM P/N United States 12345493 P/N Canada 10953488 or equivalent to the threads. The bolt installation should be done by hand to maintain correct alignment of components where each pair of bolts features a crescent washer. Slightly push the propeller shaft until it reaches the rear of the vehicle and then position it to the transfer case flange with reference mark alignment. When installing bolts for the propeller shaft and transfer case assembly keep crescent washers on the pairs and tighten the bolts in a crossed sequence to 33 Nm (24 ft. lbs.). Afterward the propeller shaft requires cross sequential torquing to 33 Nm (24 ft. lbs.) on the torque tube bolts before lowering the vehicle.

Clean and apply threadlocker GM P/N United States 12345493 P/N Canada 10953488 or equivalent.