No Fourth Gear, or Slips in Fourth Gear
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Checks | Causes |
|---|---|
| Checkball #2, 4, 8 or 12 | Valve body checkball in wrong location or an additional checkball is installed. Refer to Control Valve Body Installation . |
| Orificed Cup Plug (240) | Not fully pressed into pump cover. Refer to Oil Pump Stator Shaft Bushing Replacement . |