GM Bulletin No.: 13013B
Date: July 2013

Service Bulletin

SERVICE UPDATE
SUBJECT:

Service Update for Inventory and Customer Vehicles
Turbo-to-Exhaust Manifold Joint May Relax
Expires with Base Warranty

MODELS:

2013 Cadillac ATS
2013 Chevrolet Malibu
Equipped with 2.0L Engine (LTG)

The service procedure in this bulletin has been revised to add information about fastener/bolt
extraction, if required. Please discard all copies of bulletin 13013A.
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 tighten all 4 exhaust manifold bolts on certain
2013 model year Cadillac ATS and Chevrolet Malibu vehicles, equipped with a 2.0L engine
(LTG). The ring gasket may be pinched between the flanges on the inside diameter of the joint
leading to a visible gap. As the pinched part of that gasket relaxes, clamp load is lost at that
stud location.
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
Copyright 2013 General Motors. All Rights Reserved.

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July 2013

Bulletin No.: 13013B

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.
PART INFORMATION
No parts are required for this service update.
SERVICE PROCEDURE
1. Open the hood of the vehicle.

3268362

Chevrolet Malibu shown for illustration purposes, Cadillac ATS similar.

2. Locate the turbocharger exhaust heat shield (1).
Warning: In order to avoid being burned, do not service the exhaust system while it is still hot.
Service the system when it is cool.
3. Remove the turbocharger exhaust heat shield. Refer to Exhaust Manifold Heat Shield
Replacement (LTG) in SI.

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July 2013

Bulletin No.: 13013B

3268366

Chevrolet Malibu shown for illustration purposes, Cadillac ATS similar.

Note: If a fastener or bolt is broken on removal or assembly of the component, perform a
fastener or bolt extraction.
4. Loosen the four turbocharger-to-exhaust manifold nuts (2).
5. Tighten the four turbocharger-to-exhaust manifold nuts (2) to 30 Nm (22 lb-ft) + 90 degrees.
6. Re-install the turbocharger exhaust heat shield. Refer to Exhaust Manifold Heat Shield
Replacement (LTG) in SI.
Note: If a fastener or bolt is broken on removal or assembly of the component, perform a
fastener or bolt extraction.
7. Tighten turbocharger exhaust manifold heat shield fasteners to 9 Nm (80 lb-in).
8. Close the hood of the vehicle.
WARRANTY TRANSACTION INFORMATION
Submit a transaction using the table below.
Labor
Code
V2765

Description
Tighten Exhaust Manifold Bolts
Add: Fastener/Bolt Extraction

Labor
Time
0.3
0.1-0.5

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.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that
may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the tools,
equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to
your vehicle, or that your vehicle will have that condition. See your dealer for information on whether your vehicle may benefit from the information.

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