Noisy When Coasting
WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
| Cause | Correction |
|---|---|
| Preliminary Procedure Inspect for the proper gear oil levels prior to performing system diagnosis. Rear Axle Lubricant Level Inspection (LSY) , or Rear Axle Lubricant Level Inspection (L3B) , or Rear Axle Lubricant Level Inspection (LF4) |
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| Worn axle shaft constant velocity joints | Replace the rear wheel drive shaft. |
| 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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