No Fourth Gear, or Slips in Fourth Gear
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
No 4th or Slipping 4th
| 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 in Transmission Unit Repair article-4L60-E. |
| Orificed Cup Plug (240) | Not fully pressed into pump cover. Refer to Oil Pump Stator Shaft Bushing Replacement in Transmission Unit Repair article-4L60-E. |