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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1030 (Automatic Transmission - 4L80-E/4L85-E (Troubleshooting)) >> Troubleshooting >> Oil Out the Vent Tube

Oil Out the Vent Tube

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
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
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