Manufacturer communication — 2006 GMC YUKON XL

• Applies to 2006-2013 GM passenger cars and light duty trucks.

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  2006-2013 GM Passenger Cars and Light Duty Trucks

• Vibration in the steering wheel or seat centered at 10-14 Hz, between 93-115 km/h (58-72 mph).

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  Some customer may report vibration in the steering wheel or the seat centered at a frequency of 10-14 Hz, between 93-115 km/h (58-72 mph).

Possible causes

• Wrong wheel torque methods can mount the wheel and tire assembly off center, so its mass "orbits" the hub axis and vibrates like a tire with high RFV or an imbalance.

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  Inappropriate wheel torque methods may cause the wheel and tire assembly to be offset when mounting. This offset causes the mass of the tire and wheel to "orbit" the axis of the hub and creates vibration similar to a tire with high RFV or a tire with an imbalance.

Repair

1. Remove the tire and wheel assemblies, index them at least two stud positions from where they were, and reinstall them.

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   Remove the tire and wheel assemblies from the vehicle. Index them at least two stud positions from the previous position and re-install them.

2. With the wheel off the ground, install all lug nuts hand tight using only a socket.

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   With the wheel off of the ground, install all lug nuts hand tight using only a socket.

3. Snug all lug nuts in a star or criss-cross pattern with a hand wrench.

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   Snug all lug nuts using a star or "criss-cross" pattern using a hand wrench.

4. Lower the vehicle until the tire has just enough contact to resist turning, then torque to specification with a torque wrench.

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   Lower the vehicle until there is just enough contact to provide resistance to complete torquing to specification with a torque wrench.

Caution

• This first order tire/wheel vibration may be misdiagnosed as wheel imbalance or excessive tire radial force variation.

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  First order tire/wheel vibration may be misdiagnosed as tire/wheel assembly imbalance or excessive tire Radial Force Variation.

• Improper torque may also distort the brake rotor.

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  Notice: Improper torque may cause distortion of the brake rotor, and may result in variance in wheel mounting that can cause smooth road shake vibration.

• Do not use torque sticks or an impact driver to tighten wheel lug nuts.

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  Important: Do not use torque sticks or an impact driver to tighten wheel lug nuts.