OEM GMC Sierra 3500 Classic Drive Shaft

GMC Sierra 3500 Classic Drive Shaft Parts and Q&A

• Drive Shaft, Front
  84669663
  Q: How to replace a two-piece drive shaft on GMC Sierra 3500 Classic?

  A:

  Start the two-piece propeller shaft replacement process by acquiring clamp pliers with narrow jaw functionality (J 43218). Begin by elevating the vehicle while you make notice marks on all driveline components starting from the rear propeller shaft to its pinion yoke connection on the rear axle and extending to the front propeller shaft attachment on transmission or Transfer Case. Start by using the clamp pliers - narrow jaw (J 43218) to remove clamps securing the boot fastener at both ends of the front propeller shaft stub shaft and the rear propeller shaft Slip Yoke by lifting their exposed edges. The next step requires you to separate bolts and yoke retainers from the rear axle pinion yoke. Use careful movements to pull the rear propeller shaft in forward direction away from the rear axle pinion yoke before rotating it backwards from the front propeller shaft stub shaft until it can be pulled from the vehicle. The front propeller shaft stub shaft boot needs to be removed first while the center bearing support nuts and center bearing support can be uninstalled next. The front propeller shaft installation requires a slide toward the transmission or Transfer Case for vehicles not equipped with rpo mw7 while vehicles with this feature need the shaft connected to the transmission pinion yoke. Reposition the reference marks created in the removal phase before securing bolts without applying torque. Position the center bearing support while torquing its nuts to 40 n.m (30 lb ft) then fasten the yoke retainer bolts to 25 n.m (18 lb ft). You should inspect the front propeller shaft stub shaft splines for proper grease lubrication; supply with chassis grease gm p/n 12377985 or equivalent for additional lubrication. Mount the boot along with two new clamps onto the front propeller shaft stub shaft when applicable. The last step includes connecting the rear propeller shaft Slip Yoke to the front propeller shaft stub shaft before installation of the rear propeller shaft onto the rear axle pinion yoke while keeping reference marks aligned. Conclude the repair by installing the yoke retainers and bolts while applying torque to 25 n.m (18 lb ft) on the yoke retainer bolts followed by boot clamp crimping with clamp pliers - narrow jaw (J 43218) until reaching the proper dimensions before returning the vehicle back down.