Some customers of 2013–2016 GMC Acadia, 2017 Acadia Limited and 2013–2017 Buick Enclave and Chevrolet Traverse models may comment on a rattle or creak noise that occurs while driving at slow speeds over bumps or broken pavement. The problem may be traced to the front-lower control arm front bushing.
The front-lower control arm front bushing
To pinpoint the source of the noise, follow the Noise Diagnosis–Front Suspension procedures in Service Information.
If the rattle sound cannot be determined after a thorough visual inspection of all front suspension components, including with the use of the J39570 Chassis Ear tool, it may be necessary to replace the front-lower control arm front bushing. However, only replace the bushing on the side that is making the noise. When replacing the bushing (whether it’s due to the aforementioned noise or because of related suspension damage from a collision), be sure to follow all of the steps in the Service Information procedures.
The front-lower control arm front bushing is not serviced separately from the mounting bracket. Consequently, do not remove the bushing from the bracket. Also, the torque sequence of the bushing is critical to resolving the rattle condition. Ensure that the front-lower control arm front nut is fully tightened to properly seat the bushing before tightening the bushing nuts.
Front-lower control arm front nut (1); Front bushing nuts (2)