Noisy When Coasting

WARNING: This page is about a different car, the 2015 Chevrolet Trax and 2015 Buick Encore. However, it is still accessible from the selected car via links, so may be relevant.

Cause	Correction
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis.
Low gear oil level	Inspect the transfer case for leaks, repair as required. Refer to Transfer Case Leak Diagnosis , and Adhesives, Fluids, Lubricants, and Sealers .
Incorrect gear oil in the transfer case	Replace the gear oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .
Worn propeller shaft constant velocity joints	Replace propeller shaft assembly. Refer to Symptoms - Propeller Shaft .
Worn wheel drive shaft constant velocity joints	Replace the constant velocity joints, as required. Refer to Symptoms - Wheel Drive Shafts .
Bearing noise within the transfer case A grinding noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A grinding noise that changes as a transmission shift occurs is not within the transfer case. A grinding noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A grinding noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper transfer case fluid level. Fill, as required. Identify the location of the noise using the J 39570 Chassis Ears. If the noise continues, inspect the internal components. If damage is present, replace the assembly as required.
Gear set whine noise within the transfer case A whine noise that occurs at a specific engine speed, regardless of transmission gear, is not within the transfer case. A whine noise that changes as a transmission shift occurs is not within the transfer case. A whine noise that changes as vehicle speed changes may be also caused by worn wheel bearings. A whine noise that changes as the vehicle turns may also be caused by worn wheel bearings and/or tires.	Inspect for the proper transfer case fluid level. Fill, as required. Identify the location of the noise using the J 39570 Chassis Ears. If the noise continues, inspect the internal components. If damage is present, replace the assembly as required.