Rotor Tinnerman Push Nut Removal Requirement for Accessory Wheel and Tire Installation – 2020 Chevrolet Silverado & GMC Sierra

NHTSA ID Number: 10163214

Manufacturer Communication Number: 19NA074

Summary

This informational bulletin provides information to clarify installation requirements when installing Accessory wheels on 2020 Chevrolet Silverado HD and 2020 GMC Sierra HD.

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Clunk or Knock Noise When Turning (Replace Steering Gear Bushing) – 2007-2017 Buick Chevrolet GMC Saturn

NHTSA ID Number: 10163267

Manufacturer Communication Number: 100232001B

Summary

This technical bulletin provides a procedure to replace the steering gear bushings if found the cause of the customers concern.

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Loose Fit and/or Rattle Type Noise Heard From the Liftgate Sill Garnish Molding/ Accessory Illuminated Sill Plate – 2020 Cadillac XT6

NHTSA ID Number: 10163258

Manufacturer Communication Number: 19NA143

Summary

This technical bulletin provides a procedure to replace the retaining clips with the revised service retaining clips to provide enough engagement to fasten the liftgate sill garnish molding.

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Creak Noise Heard from the Quarter Lower Rear Trim Panel Area – 2015-2019 Cadillac Chevrolet GMC

NHTSA ID Number: 10163255

Manufacturer Communication Number: 19NA139

Summary

This technical bulletin provides a procedure to pry the upper and lower quarter rear trim panel sheet metal apart to eliminate a creak noise heard from the quarter lower rear trim panel area.

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Howling, Whining/Whirring, Shudder/Vibration, and/or Grinding Noise While in 4HI, 4HI Auto and/or During Parking Lot Maneuvers in Auto Mode – 2014-2019 Cadillac Chevrolet GMC

NHTSA ID Number: 10163252

Manufacturer Communication Number: 19NA136

Summary

This technical bulletin provides a procedure to change the diff fluid if found the cause of the customers concern.

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