Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2024 and prior GM passenger cars and light duty trucks.

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  2024 and Prior GM Passenger Cars and Light Duty Trucks

• The most common ride concern involving tire radial force variation is shake on smooth roads at highway speed, 105-115 km/h (65-70 mph).

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  The most common ride concern involving tire radial force variation is highway speed (105-115 km/h (65-70 mph) shake on smooth roads.

Possible causes

• Tire related smooth road highway speed shake can be caused by three conditions: imbalance, out of round and tire force variation.

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  Tire related smooth road highway speed shake can be caused by three conditions: imbalance, out of round and tire force variation.

Steps to confirm (in the document’s order)

1. With the vehicle raised, center the wheels on the hub by loosening all wheel nuts and hand-tightening them while shaking the wheel, then torque to specification with a torque wrench, not a torque stick.

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   With the vehicle raised, ensure the wheels are centered on the hub by loosening all wheel nuts and hand-tightening all nuts first by hand while shaking the wheel, then torque to specifications using a torque wrench, NOT a torque stick.

2. If light brake application increases the pulsation felt in the steering wheel, go to the brake-induced pulsation diagnosis in the Brakes section of the service manual.

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   are applied lightly and the pulsation felt in the steering wheel increases, refer to the Brakes section of the service manual that deals with brake-induced pulsation.

3. A reading of 35 to 50 Hz typically indicates a first order propshaft vibration.

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   35 to 50 Hz typically indicates a first order propshaft vibration.

4. Generally a reading between 10 and 20 Hz indicates a tire/wheel vibration.

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   10 and 20 Hz indicates a tire/wheel vibration

5. If vibration continues after 10 minutes of driving above 72 km/h (45 mph), temporary tire flat-spotting can be ruled out.

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   if vibration continues after 10 minutes of driving at speeds greater than 72 km/h (45 mph), temporary tire flat-spotting can be ruled out as the cause for vibration.

6. Assembly radial force variation guide: P-Metric tires on light trucks, 24 lbs (11 kg) or less.

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   P-Metric tires on light trucks 24 lbs (11 kg) or less

7. Assembly radial force variation guide: LT-tires on light trucks, 35 lbs (16 kg) or less.

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   LT-tires on light trucks 35 lbs (16 kg) or less

Repair

• If the radial runout of a tire/wheel assembly is more than 0.040 in (1.02 mm), match mount the tire to the wheel to get below 0.040 in (1.02 mm).

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  of the tire/wheel assemblies are more than 0.040 in (1.02 mm), match mount the tire to the wheel to get below 0.040 in (1.02 mm).

Caution

• On the balancer always center the wheel by the pilot bore; never use the hub-cap bore, since it is not a precision machined surface.

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  use the pilot bore for centering. Never center the wheel using the hub-cap bore since it is not a precision machined surface.