Cobalt L4-2.4L VIN B (2006)
1. Raise and support the vehicle. Refer to Vehicle Lifting
2. Remove the tire and wheel assembly.
3. Without disconnecting the hydraulic brake flex hose, remove and support the brake caliper and bracket as an assembly, and remove the brake
rotor.
4. Inspect the head of the wheel stud to be replaced, to determine if the stud is an original, round-head, or a service replacement, D-shape head.
Important: It will be necessary to cut off a portion of an original, round-head wheel stud in order to provide clearance to remove the stud from
the wheel bearing hub.
5. If an original, round-head wheel stud is to be replaced, then a portion of the stud must be cut off, so that the remainder of the stud will be
approximately 10 mm (0.39 inch) long from the face of the bearing hub flange.
6. Rotate the bearing hub to a position where the least amount of interference between the stud and the steering knuckle exists.
7. Using the J 43631 , release the wheel stud from the bearing hub. If a portion of the stud was cut off, remove and discard the stud.
8. Loosen the 3 wheel bearing/hub assembly mounting bolts evenly, until there is approximately 7 mm (1/4 inch) of clearance between the seat of the
bearing assembly and the steering knuckle. This will be necessary for removing and installing a service replacement D-shape head stud.
9. If the stud being replaced was a D-shape head, remove and discard the stud.
Installation Procedure
Important: The replacement front wheel stud has a D-shape head to provide clearance for installation.
1. With the bearing hub still in position, install the NEW service replacement stud into the bearing/hub assembly.
Notice: This is a self-retaining fastener joint that does not require thread locking compounds. Do not attempt to clean the threads with a standard
tap. If a standard tap is used, damage to the joint threads will occur.
Notice: Refer to Fastener Notice in Service Precautions.
