Noisy When Coasting
WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
| Cause | Correction |
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IMPORTANT:
Inspect for the proper gear oil levels prior to performing system diagnosis. Refer to Rear Axle Lubricant Level Inspection . |
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| Worn axle shaft constant velocity joints |
NOTE:
Replace the constant velocity joints as required. Refer to Rear Wheel Drive Shaft Outer Joint and Boot Replacement
, for the outer joint or Rear Wheel Drive Shaft Replacement - Left Side (LCV, LF4)Rear Wheel Drive Shaft Replacement - Left Side (LTG, LGX)
, and/or Rear Wheel Drive Shaft Replacement - Right Side (LGX, LTG)Rear Wheel Drive Shaft Replacement - Right Side (LF4, LCV)
for the inner jointThe outer joint is serviceable. If the inner joint is worn or damaged the entire wheel drive shaft must be replaced. |
| Worn, loose, or damaged axle mount and/or bracket | Repair or replace the axle mount and/or bracket as required. |
| Bearing noise within the differential assembly | A grinding or roar type noise will increase or decrease relative to the vehicle speed.
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| Gear set whine noise within the differential assembly | A whine type noise will increase or decrease relative to the vehicle speed, approximately 80-96 km/h (50-60 mph). Typical causes of a gear set whine type noise may include incorrect backlash and/or pinion depth adjustment or worn or scored gear set teeth.
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