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Noise in Fourth Gear

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Noise in Fourth Gear

Checks Causes
Sun Gear Thrust Washer 1st 2nd and 3rd Position Inspect for wear or damage.
Input Shaft Thrust Bearing (60) Inspect for wear or damage.
4th Clutch Hub Assembly
  • Inspect for damaged or worn 4th clutch backing plate.
  • Inspect for improper selective 4th clutch backing plate retraining ring.
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