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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) >> 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