For 1990-2009 cars

# 60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869)

Subject: | 60 Degree V6 Engine Oil Leak at Crankshaft Front Oil Seal (Use New Crankshaft Front Oil Seal Installer Tool EN-48869)

Models: | 1986-2008 GM Passenger Cars and Light Duty Trucks (including Saturn)

| with 2.8L, 3.1L, 3.4L, 3.5L or 3.9L 60 Degree V6 Engine

| (VINs D, E, F, J, K, L, M, N, R, S, T, V, W, X, Z, 1, 3, 8, 9, W, R --

| RPOs LG6, LA1, LNJ, LG8, LL1 or LX9, L82, LL2, LB8, LHO, LG5, LB6, LE2 or LQ1, LH7, LC1, L44, LZ4, LZE, LZ9, LGD, LZ8, LZG)

Important: This bulletin does not apply to 2004-2007 Saturn VUE models with 3.5L DOHC V6 Engine (VIN 4 - RPO L66) or 2005-2008 Cadillac CTS with 2.8L HFV6 Engine (VIN T - RPO LP1).

Important: This bulletin only applies to 60 degree V6 engines. Some of the discontinued 60 degree V6 engine VINs and RPOs may have carried over to other new model year engines and may no longer be a 60 degree V6 engine. So this bulletin may not apply. It is very important to verify that the following information is correct before using this bulletin:

• | Year of vehicle (e.g. N = 1992)

• | V6 Engine Liter size (e.g. 3.4L)

• | VIN CODE (e.g. X)

• | RPO (e.g. LQ1)

If ALL the information from the vehicle (year, size, VIN Code, RPO) you're working on can be found under the models listed above, then this bulletin applies to that engine. If one or more of the vehicle's information can NOT be found under the models listed above, then this bulletin does NOT apply.

### Condition

Some customers may comment on external oil leakage.

### Correction

Important: Before replacement of the crankshaft front oil seal, be sure the PCV system is operating correctly.

#### Tools Required

Important: TOOLS WERE SHIPPED TO YOUR DEALERSHIPS. IF YOU HAVE NOT RECEIVED THEM OR THEY ARE LOST, PLEASE CALL GM SPECIAL SERVICE TOOLS AT 1-800-GM-TOOLS.

The EN-48869 has a unique design to allow the technician to easily install the front crankshaft seal squarely to the correct depth and direction. Before proceeding with installation, review the illustration below to become familiar with the tool.

#### EN-48869 Crankshaft Front Oil Seal Installation Tool

1. Installer Body
2. Bearing
3. Washer
4. Drive Nut
5. Force Screw

#### Removal Procedure

1. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.

Important: Use care not to damage the engine front cover or nick the crankshaft.

2. Remove the crankshaft front oil seal (1) using a suitable tool.

#### Installation Procedure

1. Lubricate the inside of the crankshaft front oil seal (1) with clean engine oil. Then install the seal to the installer body (2).
2. Align the oil seal and installer body (1) with the engine front cover and crankshaft.

Important: Before installing the force screw, apply a small amount of the Extreme Pressure Lubricant J 23444-A, provided in the tool kit, to the force screw.

3. Install the drive nut (4) onto the threaded force screw shaft (5), washer (3), and bearing (2). Then install to the installer body (1) and tighten the force screw to the crankshaft by hand.
4. Using a wrench, turn the drive nut on the threaded force screw shaft (2), this will push the seal into the engine front cover.
5. Continue to turn the drive nut (2) with the wrench until the installer body (1) is snug and flush against the engine front cover.
6. Loosen and remove the drive nut from the threaded force screw shaft, washer, bearing, and installer body. Verify that the seal has seated properly, flush against front cover flange (1).
7. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement in SI.
8. Inspect for proper fluid levels.
9. Inspect for leaks.

### Parts Information

Part Number | Description | Qty
--- | --- | ---
10243247 | Seal, Crankshaft Front Oil | 1

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
J0750 | Seal, Timing Cover Oil Replace | Use Published Labor Operation Time