NHTSA ID Number: 10057681
Manufacturer Communication Number: SU-14907
TSB/Document Date: 2015-06-20
Summary
CHEVROLET
: PROCEDURE FOR A LOSS OF OIL PRESSURE IN TORQUE CONVERTER RESULTING IN REDUCTION OF ACCELERATION PERFORMANCE DUE TO MISBUILT NONCONFORMING PARTS OF TRANSMISSIONS THAT NEEDS REPLACING. MODEL 2015 CITY EXPRESS. *PE
GM Bulletin No.: 14907
Date: February 2015
Service Bulletin
SB-10057681-1812
SERVICE UPDATE
SUBJECT:
Service Update for Inventory and Customer Vehicles
Transmission Replacement
Expires with Base Warranty
MODELS:
2015 Chevrolet City Express
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 transmission on certain 2015 model year
Chevrolet City Express vehicles. The continuous variable transmissions in these vehicles were
misbuilt with nonconforming parts that can lead to a loss of oil pressure in the torque converter,
which results in a reduction in acceleration performance.
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. 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 2015 General Motors. All Rights Reserved.
Page 2
February 2015
Bulletin No.: 14907
PART INFORMATION
Parts required to complete this service update are to be obtained from General Motors Customer
Care and Aftersales (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
19317710
19316303
19316302
19260800
19317140
19317005
19317004
19316497
19316146
19317610
19317613
Obtain Locally
Description
TRANSAXLE, AUTO (SERVICE)
GASKET, EXH MANIF
GASKET, EXHAUST MANIF
FLUID, A/TRANS (ACDELCO CVT FLUID) (32 Oz)
COOLANT, ENGINE (BLUE) (1 GALLON)
SEAL, A/C EVPR HOSE (O RING)
SEAL, A/C CNDSR HOSE (O RING)
SEAL, TRANS FLUID FIL TUBE (O RING)
STEERING LINKAGE OUTER TIE ROD NUT
CVT COOLER BYPASS VALVE
SEAL, TRANS FLUID COOLER PIPE
COTTER PIN
Quantity/Vehicle
1
1 (if req’d)
1 (if req’d)
8
1
1
1
1
2
1
4
2
SERVICE PROCEDURE
1.
Raise hood.
2.
Remove the 15A fuse F48UA from the Under Hood Fuse Block X50A to disable the fuel
pump relay. Refer to X50A Fuse Block – Under Hood Top View in SI.
3.
Relieve fuel pressure from system. Refer to Fuel Pressure Relief in SI.
4.
Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in SI.
5.
Disconnect and remove battery from vehicle. Refer to Battery Replacement in SI.
3944411
6.
Remove the TCM transmission control module (5) from the mounting bracket (3). Refer to
Transmission Control Module Replacement in SI.
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February 2015
Bulletin No.: 14907
3816322
7.
Remove the ECM engine control module (2) from the mounting bracket. Refer to Engine
Control Module Replacement in SI.
8.
Unclip wiring harness retainers, and remove the battery tray. Refer to Battery Tray
Replacement in SI.
3905434
9.
Disconnect the electrical connectors (3) from the battery positive cable junction block (4).
Refer to Battery Positive Cable Junction Block Replacement in SI.
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February 2015
Bulletin No.: 14907
4061878
10. Remove the engine ground strap (1) located forward of the radiator surge tank and
windshield washer fill.
3807744
11. Relocate the radiator surge tank (3) and remove the coolant pressure cap.
12. Recover refrigerant from A/C system. Refer to Refrigerant Recovery and Recharging in SI.
13. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
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February 2015
Bulletin No.: 14907
3721561
14. Remove the lower noise shield fasteners (1, 2) and shield (3). Refer to Engine Compartment
Lower Noise Shield Replacement in SI.
3807720
15. Remove the drain plug screw (1). Drain the cooling system into a clean container for refill.
Refer to Cooling System Draining and Filling in SI.
16. Drain the transmission fluid. Refer to Transmission Fluid Drain and Fill (Repair) in SI.
17. Remove both front tires and wheels. Refer to Tire and Wheel Removal and Installation in SI.
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February 2015
Bulletin No.: 14907
3721182
18. Remove both front wheelhouse fasteners (1, 2, 3) and liners (4). Refer to Front Wheelhouse
Liner Replacement in SI.
19. Remove the engine drive belt. Refer to Drive Belt Replacement in SI.
3924361
20. Remove the A/C compressor. Refer to Air Conditioning Compressor Replacement in SI.
3807744
21. Remove the radiator outlet hose (6) from the bottom of the radiator. Refer to Radiator Outlet
Hose Replacement in SI.
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February 2015
Bulletin No.: 14907
3967539
22. Remove the CVT fluid cooler lines from the bypass valve (1) located in the LH wheelhouse.
Refer to Transmission Cooler Bypass Valve Replacement in SI.
4061880
23. Release the locking handle, and disconnect the Engine Wiring Harness (1) located in the LH
wheelhouse.
24. Disconnect the transmission ground strap (2) located in the LH wheelhouse.
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February 2015
Bulletin No.: 14907
3819551
25. Disconnect the heated oxygen sensor electrical connector (11) from the forward harness.
26. Remove the exhaust front pipe (8). Refer to Exhaust Front Pipe Replacement in SI.
27. Lower the vehicle.
3807744
28. Remove the radiator inlet hose (5) from the radiator. Refer to Radiator Inlet Hose
Replacement in SI.
29. Disconnect the heater core inlet and outlet hoses from the engine.
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February 2015
Bulletin No.: 14907
4061881
30. Disconnect the fuel feed tube (1) at the engine. Refer to Fuel Injection Fuel Rail Assembly
Replacement in SI.
31. Disconnect the Range Selector Lever Cable at the transmission. Refer to Range Selector
Lever Cable Replacement in SI.
32. Disconnect the brake booster vacuum hose at the rear of the engine intake manifold. Refer
to Power Brake Booster Vacuum Hose Replacement in SI.
33. Disconnect the evaporative emission canister hose at the engine intake manifold throttle
body.
34. Raise the vehicle.
3878106
35. Remove LH stabilizer shaft link (4) upper fastener (7).
36. Remove the left hand drive shaft. Refer to Front Wheel Drive Shaft Replacement (LH) in SI.
37. Remove the RH stabilizer shaft link upper fastener.
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February 2015
Bulletin No.: 14907
38. Remove the right hand drive shaft. Refer to Front Wheel Drive Shaft Replacement (RH) in
SI.
3940902
Note: Place match marks on the steering gear pinion shaft, and intermediate steering shaft yoke
before disassembly.
39. Remove the intermediate steering shaft lower bolt (2). Refer to Intermediate Steering Shaft
Replacement in SI.
3965609
40. Remove the transmission rear mount (13). Refer to Transmission Rear Mount Replacement
in SI.
41. Position the support table under the front suspension frame assembly.
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February 2015
Bulletin No.: 14907
4061884
42. Remove the drivetrain and front suspension frame along with still attached steering gear
rack. Refer to Drivetrain and Front Suspension Frame Replacement in SI.
43. Position the engine support table under the powertrain assembly.
3965609
44. Remove the LH side fasteners (1) from the mount (3). Refer to Engine Mount Replacement Left Side in SI.
45. Remove the RH side fasteners (8) from the mount (10). Refer to Engine Mount
Replacement - Right Side in SI.
46. Carefully raise the vehicle body up and away from the powertrain.
Note: The transmission oil cooler and pipes must be flushed and flow checked using DT-45096
when the transmission is replaced. Use compressed air to blow the residual transmission fluid
out of the oil cooler and lines before and after flush. Refer to Transmission Fluid Cooler Flushing
and Flow Test for directions.
47. Flush CVT cooler prior to installation of transmission.
Note: Copy the new transmission serial number, and QR code, for programming information.
Refer to Control Solenoid Valve and Transmission Control Module Assembly Programming and
Setup in SI.
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February 2015
Bulletin No.: 14907
4009316
48. Replace the transmission. Refer to Transmission Replacement in SI.
INSTALLATION PROCEDURE
49. Carefully lower the vehicle until the frame contacts the engine and transmission support
table.
3965609
50. Install the RH engine mount fasteners (8). Refer to Engine Mount Replacement - Right Side
in SI.
51. Install the LH engine mount fasteners (2). Refer to Engine Mount Replacement - Left Side in
SI.
52. Remove the engine support fixture.
53. Raise the vehicle.
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February 2015
Bulletin No.: 14907
4061884
54. Position the support table under the front suspension frame assembly.
55. Install the drivetrain and front suspension frame along with still attached steering gear rack.
Refer to Drivetrain and Front Suspension Frame Replacement in SI.
3965609
56. Install the transmission rear mount (13). Refer to Transmission Rear Mount Replacement in
SI.
3940902
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February 2015
Bulletin No.: 14907
57. Install the intermediate steering shaft lower bolt (2) with the indexed shafts. Refer to
Intermediate Steering Shaft Replacement in SI.
58. Install the right hand drive shaft. Refer to Front Wheel Drive Shaft Replacement (RH) in SI.
3878106
59. Install the right hand stabilizer shaft upper link fastener (7).
60. Install the left hand drive shaft. Refer to Front Wheel Drive Shaft Replacement (LH) in SI.
61. Install the left hand stabilizer shaft upper link fastener.
4061880
62. Connect the Engine Wiring Harness (1) located in the LH wheelhouse, and secure the
locking handle.
63. Connect the transmission ground strap (2) to the transmission in the LH wheelhouse area.
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February 2015
Bulletin No.: 14907
3967539
64. Install the CVT lines from the cooler to the bypass valve (1).
3819551
65. Install the exhaust front pipe (8). Refer to Exhaust Front Pipe Replacement in SI.
66. Connect the heated oxygen sensor electrical connector (11) to the forward harness.
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February 2015
Bulletin No.: 14907
3807744
67. Install the radiator outlet hose (6) to the bottom of the radiator (1). Refer to Radiator Outlet
Hose Replacement in SI.
3807744
68. Install the A/C compressor. Refer to Air Conditioning Compressor Replacement in SI.
Page 17
February 2015
Bulletin No.: 14907
3807720
69. Install the drain plug screw (1) in the bottom of the radiator. Refer to Cooling System
Draining and Filling in SI.
70. Install the engine drive belt. Refer to Drive Belt Replacement in SI.
3721182
71. Install both front wheelhouse liners (4), with fasteners (1, 2, 3). Refer to Front Wheelhouse
Liner Replacement in SI.
72. Install both front tires and wheels. Refer to Tire and Wheel Removal and Installation in SI.
Page 18
February 2015
Bulletin No.: 14907
3721561
73. Install the lower noise shield (3) with fasteners (1, 2). Refer to Engine Compartment Lower
Noise Shield Replacement in SI.
74. Lower the vehicle.
75. Connect the evaporative emission canister hose at the engine intake manifold throttle body.
76. Connect the brake booster vacuum hose at the rear of the engine intake manifold. Refer to
Power Brake Booster Vacuum Hose Replacement in SI.
77. Connect the Range Selector Lever Cable at the transmission. Refer to Range Selector
Lever Cable Replacement in SI.
78. Connect the fuel feed tube at the engine. Refer to Fuel Injection Fuel Rail Assembly
Replacement in SI.
79. Connect the heater core inlet and outlet hoses to the engine.
3807744
81. Connect the radiator inlet hose (5) to the radiator. Refer to Radiator Inlet Hose Replacement
in SI.
82. Install the radiator surge tank (3).
Page 19
February 2015
Bulletin No.: 14907
4061878
83. Install the engine ground strap (1) located forward of the radiator surge tank.
84. Install the battery tray, and attach the wiring harness. Refer to Battery Tray Replacement in
SI.
3816322
85. Install the ECM engine control module (2) to the mounting bracket. Refer to Engine Control
Module Replacement in SI.
Page 20
February 2015
Bulletin No.: 14907
3905434
86. Connect the electrical connectors (3) to the battery positive cable junction block (4). Refer to
Battery Positive Cable Junction Block Replacement in SI.
3944411
87. Install the TCM transmission control module (5) to the mounting bracket (3). Refer to
Transmission Control Module Replacement in SI.
88. Install the battery. Refer to Battery Replacement in SI.
89. Install the air cleaner assembly. Refer to Air Cleaner Assembly Replacement in SI.
90. Fill the cooling system. Refer to Cooling System Draining and Filling in SI.
91. Check the transmission fluid, and fill if needed. Refer to Transmission Fluid Drain and Fill
(Repair) in SI. Use only approved CVT fluid.
92. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging in SI.
93. Check the vehicle for codes. Refer to Diagnostic System Check – Vehicle in SI.
Page 21
February 2015
Bulletin No.: 14907
Note: The replacement transmission includes a CD to update the TCM after the CVT installation.
If no CD is available, contact TCSC. Refer to Control Solenoid Valve and Transmission Control
Module Assembly Programming and Setup in SI.
94. Reprogram the Transmission Control Module. Refer to Control Solenoid Valve and
Transmission Control Module Assembly Programming and Setup in SI.
95. Check and set vehicle alignment. Refer to Wheel Alignment Specifications in SI.
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
9101237
*
Description
Transmission Replacement
Labor
Time
14.0*
Net
Item
**
Labor time shown includes recover/recharge of A/C system, flush CVT cooler, wheel
alignment, and reprogramming of TCM
** Submit for the actual cost of the 2 cotter pins needed to perform the required repairs, not to
exceed $0.25 USD.
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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TSB/Document ID: SU-14907
Replacement Service Bulletin Number:
MFR Communication Date: 2015-02-01
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Communication Type: Service Bulletin/Repair Instructions
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