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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1738 (Automatic Transmission - ALLISON - Symptom Troubleshooting And Diagnosis) >> Abnormal Activities or Responses

Abnormal Activities or Responses

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
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.