Transmission Will Not Stay in Forward or Reverse
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Condition | Action |
|---|---|
| Low fluid | Adjust the fluid level. Refer to Transmission Fluid Check . |
| Leaking at solenoid assembly | Replace the solenoid assembly. Refer to Control Valve Solenoid Replacement (SS1, SS2, SS3, TCC, and MAIN MOD) or Control Valve Solenoid Replacement (PCS1 and PCS2) . |
| Low pressure | Repair the transmission. |
| Faulty solenoid - leaking | Replace the solenoid. Refer to Control Valve Solenoid Replacement (SS1, SS2, SS3, TCC, and MAIN MOD) or Control Valve Solenoid Replacement (PCS1 and PCS2) . |