GM 15850526 Front Wheel Drive Shaft Assembly

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One can start by loosening the front wheel lug nuts and raising the vehicle on jackstands in order to remove the axle shaft. Then, use a large socket and breaker bar to remove the axle shaft/hub nut. The transaxle lubricant may be drained if necessary. Disconnect the tie-rod end and stabilizer link from the steering knuckle. Separate the steering knuckle from the strut. To loosen it from the hub splines, tap at the end of the axle shaft with a soft-faced hammer. Pull out on the steering knuckle in order to detach it from hub and suspend outer end of axle shaft. Check for lubricant leakage around differential seal. Use a pry bar to carefully pry inner joint from the transaxle. Finally, remove axle shaft assembly being careful not to overextend inner joint or damage axleshaft boots. If needed secure hub with a large bolt and washers. Multi-purpose grease must be put around splines of joints when installing axle shaft. Hold out straightly on axle shaft and push it sharply inward to seat axle shaft set ring. To ensure that set ring is properly seated attempt pulling out inner CV joint housing out of transaxle by hand. Clean threads of Axleshaft outer CV joint, and then apply multi-purpose grease onto splines. Guide axle shaft into hub splines then installed new driveshaft/hub nut. Renew suspension fasteners then reconnecting steering knuckle and tie rod end. Axle shaft/hub nut should be tightened according to given torque. Install wheel and lug nuts, then lower vehicle. Finally tighten wheel lug nuts to torque value provided, if necessary add transmission fluid.

To install the driveaxle, apply multi-purpose grease around the splines of the joints. Hold the driveaxle straight out and push it in sharply to seat the driveaxle set-ring. Check that the set-ring is properly seated by attempting to pull the inner CV joint housing out of the transaxle by hand. Clean the driveaxle outer CV joint threads and coat the splines with multi-purpose grease. Guide the driveaxle into the hub splines and install the new driveaxle/hub nut. Reconnect the steering knuckle and tie rod end, then tighten the suspension fasteners. Tighten the driveaxle/hub nut to the specified torque. Install the wheel and lug nuts, then lower the vehicle. Finally, tighten the wheel lug nuts to the torque and add transaxle lubricant if necessary.

Inspecting CV joint boots is essential because damaged boots can lead to lubricant leaks and eventual CV joint damage. Immediate replacement of damaged boots is necessary.

Driveaxles transmit power from the transaxle to the wheels. The inner end of each driveaxle is connected to the transaxle, splined to the differential side gears. The outer ends are splined to the axle hubs and secured with large nuts.