Service Update
16029 Engine High Pressure Fuel Pump and Fuel Rail Low Torque
Reference Number:
Attention:

Release Date:
Revision:

N16206438

October 2016
00

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.

Make
Cadillac
Cadillac
Cadillac
Chevrolet

Model
ATS
CTS
XT5
Camaro

Model Year
From
To
2016
2016
2016
2016
2017
2017
2016
2016

RPO
LGX
LGX
LGX
LGX

Description
3.6L V-6 Engine
3.6L V-6 Engine
3.6L V-6 Engine
3.6L V-6 Engine

Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition

The high pressure fuel pump or fuel rail fastener(s) may have been improperly tightened during
manufacturing. Fuel could leak from the fuel pump or fuel rail causing the vehicle to go into reduced
power mode. If this occurs DTC P228C, P228D or P00C6 will set, causing the Check Engine Light to be
illuminated.
Using the VIN list provided below, tighten the appropriate fastener as outlined in the service procedure
section and, if required, replace the fuel pump or fuel feed intermediate pipe.

Correction

VIN

Location of Low Torque Fastener

1GYKNCRS6HZ114294

Fuel Rail

1G6AX5SS5G0196008

Fuel Pump

1G1FB1RS5G0189956

Fuel Pump

1G1FD1RS1G0168709

Fuel Rail

1G1FB1RS5G0172767

Fuel Rail

1G1FD1RS1G0181590

Fuel Pump

1G1FB3DS8G0186374

Fuel Rail

1G6AE5SS2G0119649

Fuel Pump

Parts
Quantity
1
1
1
1
3
1
1
1
1

Part Name
Fuel Feed Intermediate Pipe
Fuel Pump
Fuel Injection Fuel Rail - RH
Fuel Injection Fuel Rail - LH
Bolt
Heater Outlet Pipe Gasket
Fuel Injector Seal Kit
Intake Manifold Seal
Engine Coolant

Part No.
12673714
12647366
12671079
12671078
11588726
12647308
12657373
12648665
12346290
(US)
10953464
(Canada)

Due to the small number of vehicles involved, dealers are encouraged not to order recall parts for use as shelf stock.

Copyright 2016 General Motors. All Rights Reserved.

Page 1 of 4

Service Update
16029 Engine High Pressure Fuel Pump and Fuel Rail Low Torque
Warranty Information
Labor
Operation
9102603
9102604

Labor
Time
2.4
0.4

Description
Inspect Torque of Fuel Pump Bolts
Add: Replace Fuel Pump
Inspect Torque of Fuel Injection Fuel Rail
Cadillac XT5
Chevrolet Camaro
Add: Replace Fuel Injection Fuel Rail
Cadillac XT5
Chevrolet Camaro

Trans.
Type
ZFAT

Net
Item
N/A

ZFAT

N/A

0.7
1.6
1.1
1.8

Service Procedure
Torque Inspection of Fuel Pump Bolts

4095372
1.

Verify the torque of the high pressure fuel pump bolts (1) is 15 Nm (11 lb ft). Refer to Fuel Pump Replacement in SI.


If the torque of the high pressure fuel pump bolts is 15 Nm (11 lb ft) or GREATER, torque the bolts to 25 Nm (18
lb ft).



If the torque of the high pressure fuel pump bolts is LESS THAN 15 Nm (11 lb ft), replace the fuel pump and fuel
feed intermediate pipe

Page 2 of 4

Service Update
16029 Engine High Pressure Fuel Pump and Fuel Rail Low Torque
Torque Inspection of Fuel Injection Fuel Rail Bolts

4091979
Fuel injection fuel rail bolts – bank 1.

4093321
Fuel injection fuel rail bolts – bank 2.
1.

Verify the torque of the fuel injection fuel rail bolts (1) is 20 Nm (15 lb ft). Refer to Fuel Injection Fuel Rail Assembly
Replacement - Bank 1 or Fuel Injection Fuel Rail Assembly Replacement - Bank 2 in SI.


If the torque of the fuel injection fuel rail bolts is 20 Nm (15 lb ft) or GREATER, torque the bolts to 25 Nm (18 lb
ft).



If the torque of the fuel injection fuel rail bolts is LESS THAN 20 Nm (15 lb ft), replace the fuel injection fuel rail,
bolts, and the fuel feed intermediate pipe.

Page 3 of 4

Service Update
16029 Engine High Pressure Fuel Pump and Fuel Rail Low Torque
Dealer 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.
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers' possession
and subject to this bulletin must be held and inspected/repaired per the service procedure of this bulletin before customers
take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealer-traded,
released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.

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
Voluntary Technician
Certification
Page 4 of 4

GLOBAL SAFETY FIELD INVESTIGATIONS
DCS4223
URGENT - DISTRIBUTE IMMEDIATELY
Date:

October 21, 2016

Subject: 16029 - Service Update
Engine High Pressure Fuel Pump and Fuel Rail Low Torque
Models: 2016 Cadillac ATS
2016 Cadillac CTS
2017 Cadillac XT5
2016 Chevrolet Camaro
Equipped with 3.6L V-6 Engine (LGX)
To:

All General Motors Dealers

General Motors is releasing Service Update 16029 today. The total number of
U.S. vehicles involved is 6. Please see the attached bulletin for details.
Global Warranty Management (GWM)
The Investigate Vehicle History (IVH) screen in the GWM system will be updated
October 21, 2016. Please hold all warranty transactions until the VIN appears in IVH.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS