Manufacturer communication — 2006 GMC YUKON DENALI XL

• 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 the seat centered at a frequency of 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

• Inappropriate wheel torque methods may mount the wheel and tire assembly offset, so that its mass orbits the hub axis and creates vibration.

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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.

• Improper torque may distort the brake rotor and vary the wheel mounting, which can cause smooth road shake.

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

Repair

1. Remove the tire and wheel assemblies, index them at least two stud positions from the previous position and re-install 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 there is just enough contact to give resistance, 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

• First order tire/wheel vibration may be misdiagnosed as tire/wheel assembly 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.

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

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