Front Suspension Rattle at Slow Speeds

A rattle or creak noise at slow speeds over bumps or broken pavement on some 2013-2016 Acadia; 2013-2017 Enclave, Traverse; and 2017 Acadia Limited models may be originating from the front lower control arm front bushing. (Fig. 21)

 

Fig. 21

 

To determine the source of the rattle, follow the Noise Diagnosis – Front Suspension procedures in the appropriate Service Information.

If the rattle sound cannot be determined after a thorough visual inspection of all front suspension components and the use of the J39570 Chassis Ear tool, it may be necessary to replace the front lower control arm front bushing. Only replace the front lower control arm front bushing on the side that is making the rattle sound.

When replacing the front bushing, be sure to follow all steps in the service procedure as written in the Service Information.

TIP: The front lower control arm front bushing is not serviced separately from the mounting bracket. Do not remove the bushing from the bracket.

The torque sequence of the bushing is critical to resolving the rattle condition. Ensure that the front lower control arm front nut (Fig. 22, #1) is fully tightened to properly seat the front lower control arm front bushing before tightening the front lower control arm front bushing nuts. (Fig. 22, #2)

 

Fig. 22

 

– Thanks to Jim Miller

Wiring Harness Routing and Engine Performance Conditions
New FSE Technician Recognition Awards

2 Comments

  1. SELL STABILIZER LINKS TOO !! … VERY COMMON CAUSE OF RATTLE/CLUNK NOISE.

  2. ROD HALSTEN says:

    I LEARNED THIS ABOUT 5 YEARS AGO AND IT WAS A PAIN IN THE NECK TO FIND. YOU HAVE TO PUT THE CHASSIS EAR RIGHT ON THE END OF THE SHAFT AFTER THE BUSHING TO HEAR IT. SINCE THEN I SELL BOTH BUSHINGS WHEN DOING FRONT STRUTS. HERE IS WHY. WHEN THE CUSTOMER COMES IN WITH A RATTLE NOISE IN THE FRONT, USUALLY BOTH STRUTS ARE LEAKING. AND USUALLY THE STRUTS ARE MAKING NOISE. SO YOU PUT THE STRUTS IN AFTER SELLING OF COURSE, THEN TEST DRIVE TO FIND THIS MYSTERIOUS RATTLE STILL THERE. THE FIRST ACCUSATION YOU GET IS THERE WAS NOTHING WRONG WITH MY STRUTS, YOU MISDIAGNOSED MY VEHICLE. THEN YOU END UP EATING THE BUSHINGS AND LABOR TO MAKE CUSTOMER HAPPY. MY ADVISE IS TO SELL THEM BOTH ON EVERY STRUT JOB FOR OPTIMAL CUSTOMER SATISFACTION.

Leave a Reply

Your email address will not be published. Required fields are marked *

*