Manufacturer communication — 2006 GMC YUKON DENALI XL

• Applies to 2022 and earlier GM passenger cars and trucks.

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  Models: 2022 and Prior GM Passenger Cars and Trucks

Possible causes

• Excessive ring gear runout may result in a first order tire speed or first order prop shaft speed concern.

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  Note that excessive ring gear runout may result in a first order tire speed or first order prop shaft speed concern.

Steps to confirm (in the document’s order)

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

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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 if the complaint is from the seat, on the steering column if it is from the steering wheel.

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

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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 is still present, or balance could not be achieved, check the ring gear backlash at each tooth of the ring gear.

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   If a System Balance has been attempted but the vibration is still present or system balance was not able to be achieved, check the ring gear backlash at each tooth of the ring gear.

5. Backlash readings at each ring gear tooth should not vary more than 0.050 mm (0.002 in).

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   Backlash at each tooth on the ring gear (readings should not vary more than 0.050 mm (0.002 in)):

6. 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))

7. 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))

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

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