Campaign - Differential Carrier Assembly Replacement

SERVICE UPDATE

Bulletin No.: 12316

Date: December 11, 2012

Subject: 12316 Service Update for Inventory and Customer Vehicles Improper Differential Ring Gear Weld Expires with Base Warranty

Models:
2013 Cadillac ATS

Rear Wheel Drive

Vehicles involved in this Service Update were placed on Stop Delivery November 29, 2012. Once the service procedure contained in this bulletin has been performed on the vehicle, the vehicle will be released from the Stop Delivery.

This service update includes vehicles in dealer inventory and customer vehicles that return to the dealership for any reason. This bulletin will expire at the end of the involved vehicle's New Vehicle Limited Warranty period.

Purpose

This bulletin provides a service procedure to replace the differential carrier assembly on certain 2013 model year Cadillac rear wheel drive ATS vehicles. The weld between the ring gear and carrier may not be to specification and could allow the ring gear to separate. If this occurs, the driver can apply throttle but the vehicle will not move. If this occurs while the vehicle is in motion, the vehicle will coast to a stop.

This service procedure should be completed as soon as possible on involved vehicles currently in dealer inventory and customer vehicles that return to the dealer for any type of service during the New Vehicle Limited Warranty coverage period.

Vehicles Involved

All involved vehicles are identified by VIN in the Global Warranty Management System - Investigate Vehicle History Application. Dealership technicians should always check this site to confirm vehicle involvement prior to beginning any required inspections and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description or option content.

Additionally, a list of involved vehicles currently in dealer inventory is available on the "Service Update Bulletin Information" link under the "Service" tab in GM GlobalConnect (US) or attached to the GlobalConnect message (Canada) used to release this bulletin. Customer vehicles that return for service, for any reason, and are still covered under the vehicle's base warranty should also be checked for vehicle eligibility.

Parts Information

Differential carrier assemblies are to be obtained by sending an email to American Axle & Manufacturing (AAM) at lidio.luviano@aam.com. Axles will be shipped to dealers at no-charge. The following is to be included in the email:

- Dealership Name

- Shipping Address

- Contact Person

- Contact E-mail Address

- Contact Telephone Number

- Full 17-character vehicle identification number (VIN)

Note
All differential carrier assemblies are to be returned to the Warranty Parts Center. Please hold all assemblies until you receive the Warranty Parts Return Request form.

Service Procedure

1. Remove the differential carrier assembly. Refer to Differential Carrier Assembly Replacement in SI.

Note
The differential carrier assembly is shipped with fluid. Please verify that the differential carrier assembly has been filled with fluid BEFORE installing the assembly. No gaskets are required for this repair.

2. Install a new differential carrier assembly. Refer to Differential Carrier Assembly Replacement in SI. Refer to Parts Information in this bulletin to obtain a new differential carrier assembly.

3. Perform a road test to ensure there is no carrier assembly noise or drivetrain vibration.

Warranty Transaction Information

Submit a transaction using the table below.





* Differential carrier assemblies are being provided to dealers at no-charge. Dealers are to submit for only the applicable Mark-Up on the assembly, P/N 22927262.

** The amount identified in "Net Item" should represent the product of the vehicle's average daily interest rate (see table below) multiplied by the actual number of days the vehicle was in dealer inventory and not available for sale. This reimbursement is limited to the number of days from the date of the stop delivery message (November 29, 2012) to the date the repair is completed and the vehicle is ready for sale (not to exceed 20 days):





Dealer Program Responsibility

Whenever a vehicle subject to this service update enters your vehicle inventory, or is in your facility for service in the future, and the vehicle is still covered under the New Vehicle Limited Warranty, you must take the steps necessary to be sure the service update correction has been made before selling or releasing the vehicle.





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