Skylark V6-3100 3.1L VIN M SFI (1996)
Some customers may use penetrating oils, grease or other lubricants on wheel studs to aid in removal or installation. Always use a suitable
cleaner/solvent to remove these lubricants prior to installing the wheel and tire assemblies. Lubricants left on the wheel studs may cause improper
readings of wheel nut torque. Always install wheels to clean, dry wheel studs ONLY.
Notice
Lubricants left on the wheel studs or vertical mounting surfaces between the wheel and the rotor or drum may cause the wheel to work itself loose after
the vehicle is driven. Always install wheels to clean, dry wheel studs and surfaces ONLY.
Beginning with 2011 model year vehicles, put a light coating of grease, GM P/N 1051344 (in Canada, P/N 9930370), on the inner surface of the wheel
pilot hole to prevent wheel seizure to the axle or bearing hub.
Wheel Stud and Lug Nut Damage
Always inspect the wheel studs and lug nuts for signs of damage from crossthreading or abuse. You should never have to force wheel nuts down the stud.
Lug nuts that are damaged may not retain properly, yet give the impression of fully tightening. Always inspect and replace any component suspected of
damage.
Tip
Always start wheel nuts by hand! Be certain that all wheel nut threads have been engaged BEFORE tightening the nut.
Important
If the vehicle has directional tread tires, verify the directional arrow on the outboard side of the tire is pointing in the direction of forward
rotation.
Wheel Nut Tightening and Torque
Improper wheel nut tightening can lead to brake pulsation and rotor damage. In order to avoid additional brake repairs, evenly tighten the wheel nuts to
the proper torque specification as shown for each vehicle in SI. Always observe the proper wheel nut tightening sequence as shown below in order to
avoid trapping the wheel on the wheel stud threads or clamping the wheel slightly off center resulting in vibration.
The Most Important Service You Provide
While the above information is well known, and wheel removal so common, technicians run the risk of becoming complacent on this very important
