Oil Out the Vent Tube. GMC Truck GMC P42 Commercial Chassis 1999

For 1990-2009 cars only

Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC P42 Commercial Chassis 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E 🢒 Oil Out the Vent Tube

Checks

Cause

Pump Cover (206)

Cross channel leakage can pressurize the vent area.

Fluid

•	Foaming and filling the pump vent ports

•	Transmission is overfilled.

Transmission

Overheated