For 1990-2009 cars

# Transmission Oil Leaking From Transmission Vent (Replace Transmission Case Cover (Channel Plate) Gasket)

Subject: | Transmission Oil Leaking From Transmission Vent (Replace Transmission Case Cover (Channel Plate) Gasket)

Models: | 1997-2007 GM Passenger Cars and Light Duty Trucks (including Saturn)

| with Hydra-Matic 4T65-E Automatic Transmission (RPOs MN3, MN7, M15, M76)

This bulletin is being revised to update the correction information. Please discard Corporate Bulletin Number 01-07-30-032C (Section 07 - Transmission/Transaxle).

### Condition

Some customers may comment on a transmission oil leak.

### Cause

This condition may be caused by an improperly torqued channel plate gasket.

### Correction

To correct this condition, replace the case cover (channel plate) gaskets (429 and 430). Refer to Unit Repair publication in SI of the appropriate vehicle being serviced.

Visual inspection of the upper gasket (1) will reveal damage at the referenced area.

### Parts Information

Part Number | Description | Qty
--- | --- | ---
24206391 | Gasket Kit, A/Trns Case Cvr | 1

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
K7462 | Channel Plate and/or Gasket - Replace | Use Published Labor Operation Time