Manufacturer communication — 2006 GMC YUKON DENALI XL

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

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  Models: 2024 and Prior GM Passenger Cars and Trucks

Steps to confirm (in the document’s order)

1. When diagnosing vibration, use the worksheet together with the Vibration Analysis - Road Testing procedure in the service information.

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   When diagnosing vibration concerns, use the following worksheet in conjunction with the appropriate Vibration Analysis-Road testing procedure in the Vibration Correction sub-section in SI.

2. Place the sensor where the vibration is felt: on the seat track for a seat complaint, on the steering column for a steering wheel complaint.

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   if the vibration complaint is from the seat then place the sensor on the seat track, if the vibration complaint is from the steering wheel then attach the sensor to the steering column.

3. Moving the sensor to other areas, look for the same Hz reading with the greatest amplitude.

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   The key is to look for the same Hz reading with the greatest amplitude mg readings.

4. If a system balance was attempted and the vibration remains, check ring gear backlash at each tooth; readings should not vary more than 0.050 mm (0.002 in).

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   check the ring gear backlash at each tooth of the ring gear. Note that excessive ring gear runout may result in a first order tire speed or first order prop shaft speed concern. Backlash at each tooth on the ring gear (readings should not vary more than 0.050 mm (0.002 in)):

5. Aluminum wheel/tire runout measured on the vehicle: maximum 0.030 in (.762 mm).

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   Aluminum Wheel/Tire Runouts on vehicle (max. 0.030 in (.762 mm))

6. Hub mounting surface runout: maximum 0.005 in (0.132 mm).

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   Hub Mounting surface runouts (max. 0.005 in (0.132 mm))

7. Wheel stud runout: maximum 0.010 in (0.254 mm).

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   Wheel stud runouts (max. 0.010 in (0.254 mm))