For 1990-2009 cars

# Oil Leak from Engine Front Cover Crankshaft Oil Seal During Extremely Cold Weather (Replace Crankshaft Front Oil Seal)

Subject: | Oil Leak from Engine Front Cover Crankshaft Oil Seal During Extremely Cold Weather (Replace Crankshaft Front Oil Seal)

Models: | 2002-2005 Chevrolet Cavalier

| 2004-2005 Chevrolet Classic

| 2004-2005 Chevrolet Malibu

| 2005-2005 Chevrolet Cobalt

| 2002-2004 Oldsmobile Alero

| 2002-2005 Pontiac Grand Am, Sunfire

| 2005-2005 Pontiac Pursuit (Canada Only)

| 2000-2005 Saturn L-Series

| 2002-2005 Saturn ION, VUE

| with 2.2L Ecotec Four-Cylinder Engine (VINs D, F - RPO L61)

This bulletin is being revised to add additional models and model years, update the information and title, and correct the Parts Information. Please discard Corporate Bulletin Number 04-06-01-009 (Section 06 - Engine Mechanical ).

### Condition

Some customers may comment on an oil leak from the front engine cover crankshaft oil seal during extremely cold weather.

### Cause

During extremely cold weather, moisture at the engine crankshaft balancer may freeze to the crankshaft front oil seal, which may result in the oil seal being torn when the engine is started.

### Correction

Replace front crankshaft oil seal with a new service part, P/N 12584041, which is constructed of an improved sealing compound that is not susceptible to freezing. Refer to the service procedure in this bulletin to replace the front crankshaft oil seal.

### Service Procedure

#### Removal

1. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement in the appropriate Service Manual or SI.
2. Use a flat-bladed tool to remove the front crankshaft oil seal from the engine front cover. Discard the old front crankshaft oil seal.

#### Installation

1. Use the front crankshaft seal installer, J 35268-A to install the new crankshaft front oil seal, P/N 12584041, to the engine front cover.
2. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in the appropriate Service Manual or SI.

### Parts Information

Part Number | Description
--- | ---
12584041 | Seal -- Crankshaft Front Cover Oil

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
J0740 | Seal, Crankcase Front Cover -- Replace | Use Published Labor Operation Time