13139 Service Bulletin/Repair Instructions

Bulletin No.: 13139

Date: July 2013
Recall Bulletin
PRODUCT SAFETY RECALL

SUBJECT:
Compressed Natural Gas (CNG) Fuel Tank Shut-Off Solenoid Connector
MODELS:
2011-2013 Chevrolet Express

2011-2013 GMC Savana

Equipped with CNG Fuel System
All involved vehicles that are in dealer inventory must be held and not delivered to

customers, dealer traded, or used for demonstration purposes until the repair contained

in this bulletin has been performed on the vehicle.

CONDITION

General Motors, based on data and information from supplier IMPCO Automotive, has decided

that a defect, which relates to motor vehicle safety, exists in certain compressed natural gas

(CNG) fuel systems installed by IMPCO Automotive on 2011-2013 model year CNG equipped

Chevrolet Express and GMC Savana vehicles. As a result, General Motors and IMPCO

Automotive are conducting a safety recall.

The underbody shut-off solenoid connector to a CNG fuel tank may corrode and could form a

high-resistance short in the connector, potentially causing overheating or a self-extinguishing

flame. If there is a fuel leak or other combustible material in the vicinity, there is a risk of fire.

CORRECTION

Improved solenoids and securing nuts will be installed for all exterior tanks and the regulator,

and the 30 amp gas fuel pump fuse will be replaced with either a 7.5 amp fuse (for the four

tank configuration) or a 5.0 amp fuse (for the three tank configuration). In addition, the wiring

routing will be adjusted, if necessary, to eliminate any undue tension on the connector, and

anti-corrosion sealing plugs will be installed into the valve body (2013 model year vehicles

have these plugs already installed).

.

General Motors will contact certain fleets directly to arrange for the performance of the

required repair. Vehicle owners will also be sent a letter from General Motors advising them to

schedule an appointment with a Chevrolet or GMC dealer for this repair.

VEHICLES INVOLVED

All involved vehicles are identified by Vehicle Identification Number on the Investigate Vehicle

History screen in GM Global Warranty Management system. Dealership service personnel

Copyright 2013 General Motors. All Rights Reserved.
Page 2
July 2013
Bulletin No.: 13139
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.

For dealers with involved vehicles, a listing with involved vehicles containing the complete

vehicle identification number, customer name, and address information has been prepared

and will be provided to US and Canadian dealers through the GM GlobalConnect Recall

Reports. Dealers will not have a report available if they have no involved vehicles currently

assigned.

The listing may contain customer names and addresses obtained from Motor Vehicle

Registration Records. The use of such motor vehicle registration data for any purpose other

than follow-up necessary to complete this recall is a violation of law in several

states/provinces/countries. Accordingly, you are urged to limit the use of this report to the

follow-up necessary to complete this recall.

PART INFORMATION

Parts required to complete this recall are to be obtained from General Motors Customer Care

and Aftersales (GMCCA). 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

23425126

13586114

19168446
Description

Service Kit

Connector

Splice Sleeve Kit
Quantity/Vehicle

1*

1-4 (If Required) **

1-4 (If Required) **
* Kit includes 7.5-amp fuse, 5-amp fuse, fuse and relay label, 6 CNG valve plugs, 4 CNG

solenoids, 4 solenoid nuts, 2 o-rings, and Parker lube.

** Do NOT order connectors or splice packs unless a connector requires replacement.

SERVICE PROCEDURE

Service Procedure Overview


Remove the 30-amp fuel pump fuse and replace it with a 7.5-amp fuse if the vehicle is

equipped with a 4-tank system.

Remove the 30-amp fuel pump fuse and replace it with a 5-amp fuse if the vehicle is

equipped with a 3-tank system.

Install a new underhood fuse and relay label.

Inspect HPL solenoid electrical connector for corrosion or contamination.

Remove and replace four exterior CNG solenoids.

Inspect the HPL solenoid electrical connector harness condition and routing.

Insert plugs into CNG valves (this step can be skipped for 2013 model year vehicles,

which have the plugs already installed).
Page 3
July 2013
Bulletin No.: 13139
Fuse Replacement, Fuse and Relay Label Replacement

1. Open the hood and disconnect the negative battery cable. Refer to Battery Negative Cable

Disconnection and Connection in SI. Document ID 2069921

2. Remove the underhood electrical center cover.
3457040
3. Locate the 30-amp fuel pump fuse and remove it from the underhood electrical center or

junction block (1). Refer to number 24 on the fuse and relay label, which is located on the

underside of the underhood electrical center cover.

4. Discard the 30 amp fuel pump fuse.

Note: A new label and 7.5 and 5 amp fuse are included in the parts kit, P/N .23425126.


If the vehicle is equipped with a 4-tank system (RPO UFP), install a 7.5-amp fuse.

If the vehicle is equipped with a 3-tank system (RPO UFM), install a 5-amp fuse.
3457043
Page 4
July 2013
Bulletin No.: 13139
5. Clean the existing fuse and relay label (2) with water and shop towel.

6. Ensure the existing label is dry and free of dust and grime.

7. Install a new label over the existing label. (Position 24) Note: Label may have to be

trimmed to fit so it only covers item #24.

8. Install the underhood electrical center cover.

Midship Tank Shield and Aft Axle Tank Shield Removal

9. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document

ID 2123474

Note: Two technicians are required to complete steps 10 and 11 below.

Tools Required: 6mm Allen wrench

10. Remove the midship tank shield bolts and mid shield. Refer to Compressed Natural Gas

Tank Cover Replacement – Midship Tank in SI. Document ID 2565154

11. Remove the Aft axle tank shield bolts. Refer to Compressed Natural Gas Tank Cover

Replacement – Aft Tank in SI. Document ID 2565700

Midship Tank Service Repair Work
2562809
1. Close the manual shutoff valve for the midship tank.

2. Disconnect the high pressure lockoff (HPL) solenoid electrical connector.

3. Inspect HPL solenoid harness connector for corrosion or contamination.


If corrosion or contamination is present, replace the connector with GM P/N 13586114.

Refer to GM instructions included with connector and Splicing Copper Wire Using

Splice Sleeves in SI.

If corrosion or contamination is NOT present, proceed to step 4.
4. Mark the connector orientation of the solenoid on the valve using a marker to ensure

correct installation of the new solenoid.

5. Remove the 7/8” HPL solenoid coil retaining nut and discard it.
Page 5
July 2013
Bulletin No.: 13139
6. Remove the HPL solenoid coil and discard it.

7. Apply a thin layer of Parker lube on the lower HPL solenoid seal on both sides of the seal.
3457054
8. Replace lower HPL solenoid coil seal (1).

9. Using the reference mark created in step 4, install a new HPL solenoid coil. (Plug on

solenoid points up.)
3457050
10. Apply a thin layer of Parker lube on the upper HPL solenoid retaining nut seal on both

sides of the seal.

11. Place new seal in groove in nut.

12. Install the HPL solenoid coil retaining nut. Tighten the retaining nut to 6.5 Nm (57.5 lb-in).

13. Connect the HPL solenoid harness connector.
Page 6
July 2013
Bulletin No.: 13139
3457063
Electrical connector harness shown with no strain on the harness. Note that there is slack in the

harness. If the harness does not have any slack, remove the tie strap and adjust the harness. Secure

the harness with a new tie strap.
14. Verify that there is no strain on HPL solenoid electrical connector.


If there is strain on the electrical connector harness, remove the connector tie strap and

reposition the harness to relieve the wire strain. Install a new tie strap to secure

harness.

If there is no strain on the electrical connector harness, proceed to step 15.
3530550
Connector must point upward.
15. Install two CNG cylinder tank valve plugs (1). Refer to the illustration. This step can be

skipped for 2013 model year vehicles, which have plugs already installed.

16. Open the manual shutoff valve for the midship tank.
Page 7
July 2013
Bulletin No.: 13139
Regulator Service Repair Work
3457059
1. Disconnect the high pressure lockoff (HPL) solenoid electrical connector (1).

2. Inspect HPL solenoid harness connector for corrosion or contamination.


If corrosion or contamination is present, replace the connector with GM P/N 13586114.

Refer to GM service instructions included with connector and Splicing Copper Wire

Using Splice Sleeves in SI.

If corrosion or contamination is NOT present, proceed to step 3.
3. Mark the connector orientation of the solenoid on the regulator using a marker to ensure

correct installation of the new solenoid.

4. Remove the HPL solenoid coil retaining nut and discard it.

5. Remove the HPL solenoid coil and discard it.

6. Apply a thin layer of Parker lube on the lower HPL solenoid seal on both sides of the seal.
3457054
7. Replace lower HPL solenoid coil seal (1).

8. Using the reference mark created in step 3, install a new HPL solenoid coil.
Page 8
July 2013
Bulletin No.: 13139
3457050
9. Apply a thin layer of Parker lube on the upper HPL solenoid retaining nut seal on both

sides of the seal.

10. Place new seal in groove in nut.

11. Install the HPL solenoid coil retaining nut. Tighten the retaining nut to 6.5 Nm (57.5 lb-in).

12. Connect the HPL solenoid electrical connector.

Aft Axle Tank Service Repair Work
2567262
1. Close the manual shutoff valves for the Aft axle tanks.

2. Disconnect the high pressure lockoff (HPL) solenoid electrical connectors.

3. Inspect HPL solenoid harness connectors for corrosion or contamination.


If corrosion or contamination is present, replace the connector with GM P/N 13586114.

Refer to GM service instructions included with connector and Splicing Copper Wire

Using Splice Sleeves in SI.

If corrosion or contamination is NOT present, proceed to step 4.
Page 9
July 2013
Bulletin No.: 13139
Note: Perform steps 4-15 on both tank valves.

4. Mark the connector orientation of the solenoid on the valve using a marker to ensure

correct installation of the new solenoid.

5. Remove the HPL solenoid coil retaining nut and discard it.

6. Remove the HPL solenoid coil and discard it.

7. Apply a thin layer of Parker lube on the lower HPL solenoid seal on both sides of the seal.
3457054
8. Replace lower HPL solenoid coil seal (1).

9. Using the reference mark created in step 4, install a new HPL solenoid coil on the aft

assembly. Turn the foreward coil 180 degrees to face the aft tank assembly.
3530545
Note: Both HPL solenoid connectors should face each other after installation.

10. Apply a thin layer of Parker lube on the upper HPL solenoid retaining nut seal on both

sides of the seal.

11. Place new seal in groove in nut.

12. Install the HPL solenoid coil retaining nut. Tighten the retaining nut to 6.5 Nm (57.5 lb-in).

13. Connect the HPL solenoid electrical connector.
Page 10
July 2013
Bulletin No.: 13139
3457070
Note: Perform step 12 on forward valve only.

14. Route the forward HPL solenoid harness (1) over the top of brace (2) so that the connector

feeds directly into the solenoid.

15. Connect the HPL solenoid harness connector.
3530557
16. Install two CNG cylinder tank valve plugs (1). Refer to the illustration. This step can be

skipped for 2013 model year vehicles, which have plugs already installed.

17. Open the manual shutoff valves for the Aft axle tanks.

CNG Fuel System Check

1. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document ID 2123474

2. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and

Connection in SI. Document ID 2069921

3. Start the engine.

4. Raise and support vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document ID

2123474

Note: Use a paper clip or equivalent to perform the magnetic functionality test. The solenoids

will only be magnetic while the engine is running.
Page 11
July 2013
Bulletin No.: 13139
5. Verify the operation of the solenoid by performing a magnetic functionality test on the four

CNG HPL solenoids.

5.1 Ensure vehicle is running.

5.2 Place paper clip or equivalent on the HPL solenoid retaining nut.

5.3 Determine if HPL solenoid retaining nut is magnetic. If the HPL solenoid retaining nut is

magnetic, the CNG HPL solenoid operates as designed.

5.4 Lower the vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document ID

2123474

6. Turn off the engine after completing the magnetic functionality test.

7. Raise and support vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document ID

2123474

Note: Two technicians are required to complete steps 8 and 9.

8. Install the midship tank shield bolts and mid shield. Refer to Compressed Natural Gas

Tank Cover Replacement – Midship Tank in SI. Document ID 2565154

9. Install the Aft axle tank shield bolts. Refer to Compressed Natural Gas Tank Cover

Replacement – Aft Tank in SI. Document ID 2565700

10. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in SI. Document ID 2123474

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

9100037
Description

Rework CNG System

Add: Replace Connector
Labor Time

1.8

0.4-1.6
CUSTOMER NOTIFICATION – For US and Canada

General Motors will notify customers of this recall on their vehicle (see copy of customer letter

included with this bulletin).

DEALER RECALL RESPONSIBILITY – For US (US States, Territories, and Possessions)

It is a violation of Federal law for a dealer to deliver a new motor vehicle or any new or used

item of motor vehicle equipment (including a tire) covered by this notification under a sale or

lease until the defect or noncompliance is remedied.

The US National Traffic and Motor Vehicle Safety Act provides that each vehicle that is subject

to a recall of this type must be adequately repaired within a reasonable time after the customer

has tendered it for repair. A failure to repair within sixty days after tender of a vehicle is prima

facie evidence of failure to repair within a reasonable time. If the condition is not adequately

repaired within a reasonable time, the customer may be entitled to an identical or reasonably

equivalent vehicle at no charge or to a refund of the purchase price less a reasonable

allowance for depreciation. To avoid having to provide these burdensome remedies, every

effort must be made to promptly schedule an appointment with each customer and to repair

their vehicle as soon as possible. In the recall notification letters, customers are told how to
Page 12
July 2013
Bulletin No.: 13139
contact the US National Highway Traffic Safety Administration if the recall is not completed

within a reasonable time.

DEALER RECALL RESPONSIBILITY – All

All unsold new vehicles in dealers' possession and subject to this recall must be held and

inspected/repaired per the service procedure of this recall bulletin before customers take

possession of these vehicles.

Dealers are to service all vehicles subject to this recall at no charge to customers, regardless

of mileage, age of vehicle, or ownership, from this time forward.

Customers who have recently purchased vehicles sold from your vehicle inventory, and for

which there is no customer information indicated on the dealer listing, are to be contacted by

the dealer. Arrangements are to be made to make the required correction according to the

instructions contained in this bulletin. A copy of the customer letter is provided in this bulletin

for your use in contacting customers. Recall follow-up cards should not be used for this

purpose, since the customer may not as yet have received the notification letter.
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 13
July 2013
Bulletin No.: 13139

August 2013
Dear General Motors Customer:

This notice is sent to you in accordance with the requirements of the National Traffic and

Motor Vehicle Safety Act.

General Motors, based on data and information from supplier IMPCO Automotive, has decided

that a defect, which relates to motor vehicle safety, exists in certain compressed natural gas

(CNG) fuel systems installed by IMPCO Automotive on 2011-2013 model year CNG equipped

Chevrolet Express and GMC Savana vehicles. As a result, General Motors and IMPCO

Automotive are conducting a safety recall. We apologize for this inconvenience. However,

we are concerned about your safety and continued satisfaction with our products.





IMPORTANT

Your 2011-2013 model year Chevrolet Express or GMC Savana CNG

equipped vehicle is involved in safety recall 13139.

Owners who have not been contacted by General Motors concerning

this recall should schedule an appointment with their Chevrolet or GMC

dealer to arrange for the repairs to be completed.

This service will be performed for you at no charge.
Why is your

vehicle being

recalled?
The underbody shut-off solenoid connector to a CNG fuel tank may

corrode and could form a high-resistance short in the connector,

potentially causing overheating or a self-extinguishing flame. If

there is a fuel leak or other combustible material in the vicinity, there

is a risk of fire.
What will we

do?
To correct this condition, improved solenoids and securing nuts will

be installed for all exterior tanks and the regulator, and the 30 amp

gas fuel pump fuse will be replaced with either a 7.5 amp fuse (for

the four tank configuration) or a 5.0 amp fuse (for the three tank

configuration). In addition, the wiring routing will be adjusted, if

necessary, to eliminate any undue tension on the connector, and

anti-corrosion sealing plugs will be installed into the valve body

(2013 model year vehicles have these plugs already installed). This

service will be performed at no charge. The approximate time for

the actual repair can be as much as four hours per vehicle, but the

wait time for your vehicle may be longer depending on how busy the

dealership is.
What should

you do?
General Motors will contact certain fleets directly to arrange for the

performance of the required repair. If you have not already been

contacted by General Motors, please schedule an appointment

with your Chevrolet or GMC dealer for this repair.
Do you have

questions?
If you have questions or concerns that your dealer is unable to

resolve, please contact the GM Fleet Action Center at 1-800-3533867.
Page 14
July 2013
Bulletin No.: 13139
If after contacting your dealer and the Fleet Action Center, you are still not satisfied GM has

done their best to remedy this condition without charge and within a reasonable time, you may

wish to write the Administrator, National Highway Traffic Safety Administration, 1200 New

Jersey Avenue, SE., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at

1.888.327.4236 (TTY 1.800.424.9153), or go to http://www.safercar.gov. The National

Highway Traffic Safety Administration Campaign ID Number for this recall is 13V225.

Federal regulation requires that any vehicle lessor receiving this recall notice must forward a

copy of this notice to the lessee within ten days.
Jim Moloney

General Director,

Customer and Relationship Services
GM Recall #13139

SaleBestseller No. 1

TOPDON Bidirectional Scan Tool, 2026 New ArtiDiag900 Lite Automotive Diagnostic Tool for Full System, Scanner for Car with Active Test, 8 Reset, Wireless OBD2 Scanner Diagnostic Tool for All Vehicles

[2026 Top-Tier Hardware and Software Upgrade]: Topdon ArtiDiag900 Lite scanner has enhanced hardware and latest features, including Android 11.0, 5x faster CPU, 10000mAh battery for 12 hours of continuous operation, stable wireless diagnosis with Bluetooth 5.0, 8-inch touchscreen. Added bi-directional control, wireless diagnosis, battery testing (optional), and DTC repair guide
[TOPDON Bidirectional Scan Tool]: This bidirectional obd2 scanner sends commands to the vehicle's ECU for active testing, enabling users to accurately and quickly locate faulty components such as injectors, coolant pumps, windows, wipers, headlights, mirrors, etc. The bidirectional control scanner is the ideal choice for workshops/automotive repair shops as it significantly reduces mechanic's diagnostic time.
[Wireless Bluetooth Diagnostic Experience]: The AD900 Lite scan tool comes with a Bluetooth 5.0 VCI, supporting a wireless diagnostic range of up to 33 feet (10 meters), allowing you to diagnose without being confined to cables or tight spaces. Stable and fast wireless diagnosis provides a comfortable repair environment. It also offers VCI cables to increase connectivity options.
[DTC Repair Guide Function]: Easily diagnose issues with your vehicle and receive guidance on repairs with the topdon scan tool's fault code definitions for all systems,maximize your diagnostic capabilities. This function is compatible with Chrysler/Dodge/Jeep/Fiat 2010-2014 and expanding with continual updates,the AritDiag 900 Lite car diagnostic scanner is the must-have tool for any technician or DIY enthusiast.
[OE-Level Full System Diagnostics]:AritDiag900 Lite full system diagnostic scanner can scan ALL available modules(Engine, Transmission, Airbag, ABS, ESP, TPMS, Gateway, Steering, Radio, Air conditioning, ect.) to✔read ECU info, ✔read/clear codes, ✔view live data stream, ✔retrieves freeze-frame, ✔perform active tests, and more. With just a simple click, it provides you with accurate and in-depth diagnostics.

SaleBestseller No. 2

TOPDON ONE Bidirectional Scan Tool, 10.1" OBD2 Scanner with J2534 Pass-Thru and ECU Coding, Over 50 Resets, Topology Mapping Car Diagnostic Tool for All Vehicles

Dual WiFi & 10.1" Touchscreen: Provides a stable, high-speed wireless link 3x faster than bluetooth, and a responsive, professional interface. Topdon ONE obd2 scanner diagnostic tool ensures smooth, non-lagging diagnostic scan, boosting mechanic efficiency
J2534 Pass-Thru Support: The included ONE VCI supports the J2534 standard, allowing it to function as a pass-thru device when paired with OEM diagnostic software.Through TOPDON’s RLink platform, technicians can perform dealer-level coding, expanding in-house capabilities without investing in multiple factory automotive scan tools
OE Topology Mapping: Visualize the vehicle’s ECU network exactly as it’s built.Zoom, pan, and highlight specific modules to pinpoint component issues with precision.Topology mapping displays real-time communication between modules
Topfix AI Assistant: Covers 5 million plus fault codes and delivers instant causes, symptoms, and repair guidance with professional wiring diagrams for each code.Slashes diagnostic time, boosts first-time fix accuracy, and increases shop revenue
50 Plus Service Functions: Covers high-demand services like ADAS calibration, DPF regen, TPMS reset, ABS bleed, and throttle adaptation.Expands your service menu, allows you to charge premium rates, and turns away zero jobs due to lack of tooling. Vehicle-specific functionality may vary.

SaleBestseller No. 3

TOPDON TopScan Lite OBD2 Scanner Bluetooth, Bi-Directional Scanner Wireless All System Diagnostic Tool for iOS & Android, 8+ Hot Reset, Repair Guides, Check Engine Car Code Reader, Performance Test

Bi-Directional Control, Quickly Locate Problems: Turn your phone into a professional diagnostic tool. You can send commands from your phone to the ECU to test injectors, cooling fans, headlights, A/C clutch, windows, wipers, and more. See which one doesn't respond. Helps you quickly locate the problem and save time. No need to tear things apart, avoid blind disassembly.
Full System Diagnostics, No Fault Hides: Unlike basic diagnostic tools that only cover 4 systems, TopScan can scan all systems. Read and clear trouble codes, view live data streams, and generate a complete vehicle health report – all issues are clear at a glance. Covers 10,000+ vehicle models and is compatible with 99.99% of vehicles.
Flexible Subscription, Choose Advanced Features as Needed: TopScan Lite provides free-for-life access to core diagnostics, including full system scan, code reading, performance tests, and repair information. After purchase, advanced features (bi-directional control, service operations, live data, code clearing, and AI functions) are free-for-the-first-year. After the first year, if you want to use advanced features, you need to subscribe on a monthly, quarterly, or yearly basis. As new models and reset functions are updated, the tool will also be continuously upgraded.
AI Assistant - TopFix: Think of TopFix as your personal AI mechanic. It leverages a repair database and OEM data to deliver clear, step-by-step repair solutions. Features include AI Q&A, one-click translation, and a full repair log, making your diagnostic process simpler and more efficient.
8+ Hot Resets, Keep Your Car in Top Shape: One-tap resets for oil, throttle, EPB, steering angle, DPF, ABS, BMS, and airbag. It enables car owners to easily perform essential maintenance, ensuring the vehicle stays in optimal condition and extends its service life.

This product presentation was made with AAWP plugin.

Last update on 2026-05-12 / Affiliate links / Images from Amazon Product Advertising API

Buffer Email Facebook Flipboard Hacker News LinkedIn Messenger Mix Pinterest Print Reddit SMS Telegram Tumblr X VK WhatsApp Line Xing Threads Bluesky Copy Mastodon Nextdoor