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Home >> Chevrolet >> 2007 >> Avalanche 5.3 3 >> Repair and Diagnosis >> External Pages >> Different car >> Section 899 (Automatic Transmission - 6L50/6L80/6L90 - Service, Diagnosis & Troubleshooting) >> Noise During 3-4 or 4-3 Shifts

Noise During 3-4 or 4-3 Shifts

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Cadillac Escalade EXT, 2007 Cadillac Escalade ESV, and 2007 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
Noise During 3-4 or 4-3 Shifts

Checks Causes
4-5-6 Clutch (with Output Carrier Shaft and Dampener) Hub Assembly (58)
  • Inspect hub assembly (475), dampener (476), and apply plate (477) for wear or damage.
  • Inspect for damaged or worn 4-5-6 clutch backing plate (432).
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