For 1990-2009 cars

#### No First Gear, Slips in First Gear

Checks | Causes
--- | ---
Forward Clutch | No apply or slipping
Piston and Seal Assembly (607) | Binding, cracked, or leaking
Inner Seal (608) | Plugged orifice
Clutch Plates (601-604) | Worn friction, or broken splines
Snap Ring (600, 605) | Out of position
Housing (609) | Cracked, or plugged feed holes
Housing Retainer and Ball Assembly | Missing or out of position
Springs (606) | Binding
Input Sprag (515) | Damaged or not holding
Lo Roller Clutch (652) | Damaged or not holding
Forward Clutch Fluid Routing | Fluid leak or restriction
Oil Feed Tubes (83) |

• | Bent, broken, or plugged

• | Leaking seal rings

Forward Clutch Support (114) |

• | Porosity

• | Leaking or damaged seal rings

• | Plugged feed holes

Channel Plate (27) and Gasket (28) |

• | Porosity

• | Misalignment

• | Fluid leaking across the channels

• | Restriction

PSA (13) | Leaking drive switch O-ring
1-2 Shift Solenoid Valve (305) |

• | Failed OFF

• | Leaking

1-2 Shift Valve (302) | Stuck in upshifted position
2-3 Shift Solenoid Valve (305) |

• | Failed ON

• | Plugged exhaust

• | Manual Valve (800)

• | Shift Linkage

Misalignment

Torque Converter (55) | Stator roller clutch is not holding
Line Pressure | Low Pressure (Refer to High or Low Line Pressure )