13275 Service Bulletin/Repair Instructions

GM Bulletin No.: 13275

Date: August 2013
Service Bulletin
SERVICE UPDATE

SUBJECT:
Service Update for Inventory and Customer Vehicles

Turbo Vacuum Hose Routing - Inspect

Expires with Base Warranty
MODELS:
2014 Cadillac XTS

Equipped with 3.6L V6 Engine (LF3)
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 inspect the routing of the turbo vacuum hoses and,

if necessary, reroute the hoses and replace any that are damaged on certain 2014 model year

Cadillac XTS vehicles that are equipped with a 3.6L V6 engine (LF3). The hose on some of

these vehicles may be routed incorrectly. This could cause the turbo wastegate to remain open,

reduce engine power at high throttle openings, and the illumination of a MIL light at the first

instance of operation demanding turbo boost.

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.

Copyright 2013 General Motors. All Rights Reserved.
Page 2
August 2013
Bulletin No.: 13275
PART INFORMATION

Parts Pre-Ship Information – For US and Canada

Important: Parts required to complete this service update will be pre-shipped to involved

dealers of record. This pre-shipment is scheduled to begin the week of August 26,

2013, and will be 100% of each dealer’s involved vehicles. Pre-shipped parts will be

charged to dealer’s open parts account.

Additional parts, if required, are to be obtained from GMCC&A. Please refer to your “involved

vehicles listing” before ordering parts. Normal orders should be placed on a DRO = Daily

Replenishment Order. In an emergency situation, parts should be ordered on a CSO =

Customer Special Order.

Part Number

12656521
Description

TUBE, CHRG AIR BYPASS VLV VAC TK
Quantity/Vehicle

1 (if req'd)
SERVICE PROCEDURE
2752274
1. Remove the front compartment front sight shield. Refer to Front Compartment Front Sight

Shield Replacement in SI.
3330809
2. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement in SI.

Note: Inspect the turbo charger wastegate actuator vacuum boost tube bundle for proper

routing. In addition, inspect the condition of the tubing and clip attachments. Ensure tubing does

NOT have any kinks or cuts. Replace damaged tubing or clip attachments.

3. Determine if the turbo charger wastegate actuator vacuum boost tube bundle for the left

cylinder bank is properly routed and free from kinks.
Page 3
August 2013
Bulletin No.: 13275
Correct Routing
3609931

If the turbo charger wastegate actuator vacuum boost tube bundle (1) is routed correctly,

no further action is required. Install the intake manifold cover and front compartment front

sight shield. Refer to Intake Manifold Cover Replacement and Front Compartment Front

Sight Shield Replacement in SI.
Incorrect Routing
3609947

If the turbo charger wastegate actuator vacuum boost tube bundle (1) is NOT routed

correctly, disconnect the tube bundle from the attachment points and re-route the tube

bundle. Install the intake manifold cover and front compartment front sight shield AFTER

completing the repair. Refer to Intake Manifold Cover Replacement and Front

Compartment Front Sight Shield Replacement in SI. Refer to the following sections in this

bulletin for information about how to correctly route the turbo charger wastegate actuator

vacuum boost tube bundle:

 Charge Air Bypass Valve Vacuum Tank Tube Routing and Connection Aids on

Engine

 Charge Air Bypass Valve Vacuum Tank Tube Routing and Connection Aids At

Turbo Wastegate Regulator Solenoid
Page 4
August 2013
Bulletin No.: 13275
Charge Air Bypass Valve Vacuum Tank Tube Routing and Connection Aids on Engine
3609938
Black 90 Degree Connector (2) Gray 90 Degree Connector (3) Gray 90 Degree Connector Tube Attachment

Clip Point (4) Black Straight Turbo Actuator Connection (5) Christmas Tree Fastener Attached to Bracket Hole
Page 5
August 2013
Bulletin No.: 13275
Charge Air Bypass Valve Vacuum Tank Tube Routing and Connection Aids At Turbo

Wastegate Regulator Solenoid
3609952
(1) Straight Gray Tube Connection (Side View)

(2) Straight Black tube Connection (Side View)
3609926
(3) 90 Degree Black Connector Charged Air Bypass Valve Solenoid (Top View)
WARRANTY TRANSACTION INFORMATION

Submit a transaction using the table below. All transactions should be submitted as a ZFAT

transaction type, unless noted otherwise.

Labor

Code

9100139
Description

Inspect Turbo Boost Tube

Add: Re-Route or Replace
Labor

Time

0.3

0.2
Page 6
August 2013
Bulletin No.: 13275
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.
We Support

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