No Fourth Gear, or Slips in Fourth Gear
WARNING: This page is about a different variant/trim than selected.
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 Manual-4L60-E. |
| Orificed Cup Plug (240) | Not fully pressed into pump cover. Refer to Oil Pump Stator Shaft Bushing Replacement in Transmission Unit Repair Manual-4L60-E. |