Noisy on Turns
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
| Cause | Correction |
|---|---|
| Inspect for the proper gear oil levels prior to performing system diagnosis. Refer to Rear Axle Lubricant Replacement . Operate the vehicle turning in tight circles in both left and right directions. A moan, groan, chatter, or a pulsing type concern may indicate a pump, valve, or clutch pack malfunction within the differential assembly. |
|
| Worn or loose rear differential mounts | Repair or replace as required. |
| Loose torque tube bracket or a damaged bracket bushing | Tighten the bracket bolts or replace the bracket as required. |
| Worn axle shaft constant velocity joints | Replace the constant velocity joints as required. |
| Worn wheel bearings | Replace the wheel bearings as required. |
| Incorrect type fluid Installation of the incorrect type gear oil may create a "moan" type noise within 7,770-25,900 km (3-10,000 miles). Fluid that is "black" in color is to be considered normal and is darkened by the carbon material in the clutch plates. |
Replace the rear differential assembly as required. Fluid replacement will not correct a "moan" condition caused by the use of incorrect oil. Refer to Differential Carrier Assembly Replacement . |
| Worn clutch pack friction discs | Replace the differential assembly. |