Is the tie rod a part of axle assembly 2001 Buick La Sabre?
No, the tie rod is not part of the axle assembly on a 2001 Buick LeSabre (or most modern vehicles). The tie rod is part of the steering system. It connects the steering knuckle (which is part of the suspension and attached to the wheel) to the steering rack. The axle, on the other hand, is part of the drivetrain, transmitting power from the transmission to the wheels. They are separate systems.