How do you replace a front axle-shaft on a Pontiac Montana?

To replace the front axle shaft on a Pontiac Montana, start by safely lifting the vehicle and removing the wheel. Unbolt the brake caliper and rotor, then detach the lower control arm and any necessary suspension components to access the axle shaft. Remove the axle nut and pull the axle out of the hub; then, slide the new axle shaft into place, reassemble the components in reverse order, and ensure everything is securely tightened. Finally, lower the vehicle and check for proper operation.