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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Automatic Transmission - ALLISON - Service, Diagnosis & Troubleshooting) >> Abnormal Activities or Responses

Abnormal Activities or Responses

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Abnormal Activities or Responses

Condition Action
Excessive Creep in First and Reverse Gears
Engine idle speed too high Adjust to the correct idle speed.
Vehicle Moves Forward in Neutral
1-2-3-4 clutch failed or not released Rebuild the 1-2-3-4 clutch.
Vehicle Moves Backward in Neutral
3rd, 5th and reverse clutch failed or not released Rebuild the 3rd, 5th and reverse clutch assembly.