Noisy When Coasting

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Noisy When Coasting

Cause	Correction
Inspect for the proper transaxle and gear oil levels prior to performing system diagnosis. Refer to Transfer Case Fluid Drain and Fill .
Loose propeller shaft mounting bolts	Tighten the bolts, as required. Refer to Propeller Shaft Replacement .
Worn propeller shaft universal joints	Replace components, as required. Refer to Propeller Shaft Replacement .
Worn or loose propeller shaft center support bearing	Replace components, as required. Refer to Propeller Shaft Replacement .
Worn axle shaft constant velocity joints	Replace the constant velocity joints, as required.
Loose rear differential mounts or worn bushings	Tighten the mount bolts or replace, as required.
Incorrect oil in the transfer case	Replace the oil with GM P/N 12378261 (Canadian P/N 10953455).
Bearing noise within the transfer case A grinding or roar type noise will increase or decrease relative to the vehicle speed.	Inspect for the proper fluid level and fill, as required. If the noise continues, replace the transfer case, as required.
Gear set whine noise within the transfer case Whine type noises will increase or decrease relative to the vehicle speed.	Inspect for the proper fluid level and fill, as required. If the noise continues, replace the transfer case, as required. Contributing factors may include: Incorrect backlash between the gear set Worn or damaged gear teeth Transaxle assembly noise Differential noise