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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1587 (Automatic Transaxle - 4T45-E - Service, Diagnosis & Troubleshooting) >> Final Drive Noise or Hum Noise

Final Drive Noise or Hum Noise

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.
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