For 1990-2009 cars

# EI08267 - Rear Axle Pinion Seal Leak (Engineering Information)

Subject: | EI08267 -- Rear Axle Pinion Seal Leak (Engineering Information)

Models: | 2008-2009 Cadillac CTS, SRX, STS

| 2008-2009 Pontiac Solstice

| 2008-2009 Saturn SKY

Attention: | U.S. and Canada Dealers Only -- Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS. If the customer has not commented about this condition or the EI does not show in GMVIS, disregard the bulletin and proceed with diagnostics found in published Service Information (SI). THIS IS NOT A RECALL -- refer to Service Bulletin 04-00-89-053B for more details on the use of Engineering Information bulletins.

Some customers may comment on a leak from the rear of the vehicle. Diagnose the vehicle to determine the source of the leak.

Complete the following steps ONLY if the source of the leak is the rear axle pinion seal. If the source of the leak is other than the rear axle pinion seal, disregard this bulletin, diagnose and repair according to information published in SI.

Note the following information on the repair order:

1. Verify that the VIN and mileage are accurately recorded on the repair order.
2. Inspect for leakage at other locations (output seals, vent, plugs) that may have been identified as a pinion seal leak. Note any other visible leaks.
3. If possible, take detailed digital pictures of the leakage at the pinion seal as-is from the customer (no cleaning, etc.). E-mail all digital photos to: richard.burrell@gm.com (make sure VIN, R.O., Dealer Name, Location and Dealer Code information is contained in e-mail).
4. Inspect for incorrectly assembled seals (cocked at an angle, not fully pressed in, etc.).
5. Inspect for damage to the slinger (unseated, dings, broken welds, etc.).
6. How was the leak was found? Is this a concern that the customer brought the vehicle in for, or did the technician discover the leak during inspection?
7. Drain the fluid and measure the quantity.

Important: The rear axle assembly should not be replaced unless directed by engineering.

8. Contact the appropriate engineer. The engineer may request the pinion seal back for analysis. All parts will be requested back using the Warranty Parts Center (WPC) process.

If engineering is unable to take the call, leave the following information. If a returned called is not received within one hour, diagnose and repair the vehicle according to information found in SI.

- | Technician Name

- | Dealership Name, Location, Dealer Code and Phone Number

- | VIN and Repair Order Number

#### Engineering Contact

Vehicle Line | Contact | Phone Number
--- | --- | ---
Cadillac CTS, SRX, STS | Christopher Jones | 586-947- 7167
Pontiac Solstice Saturn SKY | Kurt Stecker | 586-947-7179
Alternate Contact (All Vehicle Lines) | Rich Burrell | 586-947-5740

### Parts Information

Part Number | Description
--- | ---
25861283 | Differential Drive Pinion Gear Seal

### Warranty Information

For vehicles repaired under warranty, use:

Labor Operation | Description | Labor Time
--- | --- | ---
F2023 | Seal, Pinion Shaft Oil -- Rear Differential -- Replace | Use Published Labor Operation Time