Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2015 and prior GM passenger cars and trucks.

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  Models: 2015 and Prior GM Passenger Cars and Trucks

• A vibration shortly after tires are mounted may be caused by the tires slipping on the wheels, which moves the tire's imbalance point away from the weight location.

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  A customer concern of vibration shortly after having a tire or tires mounted may be caused by slippage of the tires on the wheels, placing the imbalance point of the tire away from the weight location.

Possible causes

• Wheel slip normally comes from too much lubricant or lubricant applied in the wrong locations.

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  Wheel slip normally occurs for the following reasons: • Excessive amount of lubricant used or lubricant applied in the wrong locations.

Steps to confirm (in the document’s order)

• Put a temporary mark on the tire at the valve stem and drive: slip under one inch is probably not contributing; slip over one inch with a ride disturbance felt on the test drive may be causing the vibration.

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  Wheel slip can be checked by placing a temporary mark on the tire at the valve stem. After driving the vehicle, if the wheel slip is less than one inch, then wheel slip is probably not contributing to a ride disturbance. When wheel slip is greater than one inch, and you felt a ride disturbance on the test drive, then wheel slip may be causing the vibration.

Repair

1. Lubricate the tire beads only from "heel to toe"; lubricant outside that zone reduces the tire's grip on the wheel.

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   To eliminate wheel slip, the tire beads should normally only be lubricated from "heel to toe.” Lubricant applied outside the heel to toe zone will cause the tire to have reduced grip on the wheel and increase the likelihood of slippage.

2. On the wheel, lubricate the safety humps, leave the rim flanges dry, and lubricate the drop center only for difficult to mount tires.

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   When lubricating the wheel, lubricate the safety humps, leave the rim flanges dry and lubricate the drop center area only for difficult to mount tires.

3. Complete mounting within 10 minutes of applying the lubricant; evaporation after 10 minutes may prevent proper bead seating.

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   7. The mounting process must be completed within 10 minutes of the application of the mounting lubricant. Evaporation of the mounting lubricant after 10 minutes may prevent proper bead seating.

4. Inflate the tires to 275 kPa (40 psi) when mounting, then reduce to the desired operating pressure.

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   8. Inflate the tires to 275 kPa (40 psi) when mounting, then reduce the air pressure to the desired operating pressure.

5. After rebalancing and fitting to the vehicle, park the vehicle for one hour to let the lubricant evaporate.

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   10. Rebalance the tires and mount on the vehicle. 11. Park the vehicle for one hour to allow the lubricant to evaporate.

Caution

• This test is effective only if the vehicle was serviced within the last couple of hours.

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  Note: This diagnostic test will only be effective if the vehicle has been serviced within the last couple of hours.

• Do not use products containing silicone, alcohol, petroleum based products, solvents or corrosives for cleaning or lubrication.

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  4. Do not use products containing silicone, alcohol, petroleum based products, solvents or corrosives for cleaning or lubrication.

• Do not drive aggressively (hard acceleration or braking) for up to 24 hours after tire mounting, so the lubricant can dry.

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  Also, the vehicle should not be driven aggressively (hard acceleration or braking) for up to 24 hours after tire mounting to allow the lubricant to dry.