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Home >> Chevrolet >> 2006 >> Cobalt LTZ >> Repair and Diagnosis >> External Pages >> Different car >> Section 709 (Automatic Transaxle - 4T45-E - Service, Diagnosis & Troubleshooting) >> Troubleshooting >> Final Drive Noise or Hum Noise

Final Drive Noise or Hum Noise

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Final Drive Noise or Hum Noise

Checks Causes
DEFINITION: A final drive noise or hum is most noticeable under light throttle acceleration or turns.
  • Final Drive Gear Set (116)
  • Final Drive Internal Gear (118)
  • Worn planet pinions
  • Worn washers
  • Worn or damaged teeth
  • Differential Carrier (116)
  • Differential Side Gears (709)
  • Worn or pitted gears
  • A damaged thrust washer