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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 505 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> No First Gear

No First 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.
No First Gear

Checks Causes
1-3 Clutch Assembly
  • Inspect for damaged 1-3 clutch piston assembly.
  • Inspect for worn or damaged 1-3 splines.
Drive Motor with Generator Position 2
  • Inspect splines.
  • Inspect HV connections.
Hybrid Low 1-2 Clutch Assembly
  • Inspect for damaged 1-2 clutch piston assembly.
  • Inspect for worn or damaged 1-2 splines.
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