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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 155 (Automatic Transmission - 6L50/6L80/6L90 - Service, Diagnosis & Troubleshooting) >> No First, Second, Sixth, or Reverse Gear

No First, Second, Sixth, or Reverse Gear

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.
No First, Second, Sixth, or Reverse Gear

Checks Causes
Center (with 2-6 Low and Reverse Clutch) Support Assembly (67)
  • Inspect for a damaged center support assembly (459).
  • Inspect for worn or damaged output carrier outer sun gear shaft front and rear bushing (458 and 460).
Center Support Retaining Ring (66) Inspect for damage.
Output Carrier Assembly (68) Inspect for a worn or damaged center support roller bearing assembly (485).
2-6 and 3-5-R Clutch Hub Thrust Bearing Assembly (65) Inspect the bearing for wear or damage.
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