No First Gear, Slips in First Gear
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
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) |
|
| Forward Clutch Support (114) |
|
| Channel Plate (27) and Gasket (28) |
|
| PSA (13) | Leaking drive switch O-ring |
| 1-2 Shift Solenoid Valve (305) |
|
| 1-2 Shift Valve (302) | Stuck in upshifted position |
| 2-3 Shift Solenoid Valve (305) |
|
|
Misalignment |
| Torque Converter (55) | Stator roller clutch is not holding |
| Line Pressure | Low Pressure Refer to High or Low Line Pressure . |