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Home >> Hummer >> 2009 >> H3 Adventure, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information And Procedures >> Second/Third Gear Only or First/Fourth Gears Only

Second/Third Gear Only or First/Fourth Gears Only

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Second/Third Gears Only or First/Fourth Gears Only

Checks Causes
1-2 Shift Solenoid Valve (367A)
  • Sediment is in the valves
  • The electrical connection is faulty
  • Damaged seal