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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Automatic Transmission - 4L80-E/4L85-E (Service & Replacement)) >> Diagnostic Information and Procedures >> Forward Motion In Neutral

Forward Motion In Neutral

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Forward Motion In Neutral

Checks Cause
Manual Valve (319) Valve is mispositioned or stuck.
Forward Clutch Springs (607) Jammed
Forward Clutch Piston (606) Jammed
Forward Clutch Plates (610, 611) Seized or jammed
Forward Clutch Housing (602) The hole is plugged.
Hub (613) The holes are plugged.
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