GM J2534 Reprogramming

Techline Connect

Techline Connect — GM’s latest tool that brings together diagnostic information and vehicle data in one easy-to-use application.

Operating System Recommendations

Computer system recommendations for dealerships to ensure proper performance of the application include:

Display: 15-inch high definition (HD) display
Hard Drive: 500+ GB
System Memory (RAM): 8GB
Processor: Intel Core i7 5th Gen
Operating System: Windows 10 Professional, 64 bit

Check the latest version of the GM Dealer Infrastructure Guidelines (DIG) for all required specifications.

Installation

You will need approximately 30 minutes to complete the full Techline Connect installation.

Techline Connect will install components to the local personal computer (PC), including Java and the application.

A Techline Connect User Guide also is included in the application download. It includes installation instructions and an overview of the application.

Getting Started

Techline Connect can be installed on a new PC as well as one that already uses TIS2Web and GDS 2.

To get started:

The download will install a Download Manager on the PC. The Download Manager will automatically download components such as GDS 2 application and data, large calibration files, MDI updates and other applications as well as updates to these applications, based on the version already installed on the PC. It also will automatically check for valid application leases and renew leases if necessary. Any updates to the application will download and install automatically.

On the initial installation of Techline Connect, the GDS 2 Diagnostic Package must be installed. The installation is done through the Manage Diagnostic Package function in GDS 2. When installing, answer “Yes” to keep previous GDS 2 sessions.

On new PCs, MDI Setup will need to be completed. The MDI software components are included in the Techline Connect download. On currently used PCs, the existing MDI setup will be used.

All applications will need to be set up to allow third party downloads in order for the latest updates to be downloaded and installed to keep all applications up to date.

Launching Techline Connect

Techline Connect manages the MDI connection as well as the vehicle connection, providing access to diagnostic data and vehicle information.

To launch the app:

Click the icon to launch Techine Connect.
Connect the MDI/VCI and establish the device connection.
With the MDI/VCI connected to the vehicle, select MDI from the MDI Explorer when prompted.

When a connection is established, Techline Connect will automatically connect to the vehicle and retrieve the VIN. The VIN and connection status are shown at the top of the dashboard. In addition, Investigate Vehicle History (IVH) information, Field Actions and Warranty History for the vehicle are automatically displayed.

From the Techline Connect Dashboard, users can access GM diagnostic applications, Service Information, and other functions in multiple panels or windows.

Support

Select the Support menu on the dashboard for a number of resources, including Feedback, SPS Info, Software Download, Techline Print, Help and other functions. For example, Tech2Win can be installed from Software Download and will function separately from Techline Connect.

A link to the Techline Connect User Guide as well as a short training video also are provided at the beginning of the application download process. Be sure to review both resources before using the application.

If you have any questions on Techline Connect, contact the Techline Customer Support Center (TCSC) at 1-800-828-6860 (English) or 1-800-503-3222 (French).

What is Techline Connect?

Techline Connect (formerly TIS2Web) rollout of the new application to dealerships begins in 2019 brings together all the common resources technicians use every day for diagnosis and repairs in one simple application. The all-new application has a single sign-on for access to nine applications — integrating Service Information, reprogramming, programing, diagnostics, vehicle information and other features — to help technicians efficiently and accurately manage the information available to them in the service department.

Like other tech companies that do not support older, out of date applications, GM cannot continue to support TIS2Web, which is based on legacy technology and outdated security applications. In addition to GDS2, other diagnostic features will be removed gradually until the full retirement of TIS2Web in mid- to late-2021.

Techline Connect supports all diagnostic tools available in TIS2Web and all development of future capabilities going forward will be focused on enhancing and expanding the Techline Connect experience.

The Techline Connect application has a single sign-on for access to nine applications, seamlessly integrating Service Information (SI), a scan tool (GDS2), the Service Programming System (SPS2), and other applications with vehicle-specific information. All information and applications are available on a technician friendly dashboard with an intuitive interface that also automatically displays Investigate Vehicle History (IVH) information, Field Actions, and Warranty History when connected to a vehicle.

GM account login

Login account is a required request when you proceed to install Techline Connect.
Like TIS2Web, installation of Techline Connect requires the use of Administrative Rights. During installation, if the PC doesn’t have the correct rights, the user will most likely be unable to perform completion of the installation.

Also, account should be maintained login when using SI (Service Information) and SPS2 (Service Programming System).

Si (Service Information)

Keep your shop informed and up to date with the most current and accurate repair data. Service Information, or Si, is a comprehensive collection of vehicle diagnostic and service repair manuals for GM vehicles—so your shop has everything you need to perform safe, proper repairs.

Select the SI tab to begin using the Service Information or enter a keyword in the keyword entry function on the far right of the dashboard. Techline Connect uses the connected VIN or the vehicle built in the Vehicle Selection drop-down menu to search SI. Several SI documents can be opened at the same time.

Note: When using SI (Service Information), you need to login GM account on Techline Connect online

The features Si (Service Information):

Provides the most accurate and current repair information, to GM Original Equipment quality standards
Delivers collision repair procedures, frame-sectioning information, panel-replacement procedures, and recall information
Empowers your shop with service repair information to repair GM vehicles quickly and accurately
Speeds up service repairs and controls costs by helping your complete jobs correctly the first time
Features an expansive library of information that covers vehicle manuals, specifications, service bulletins, VIN tags, and more

Subscription Includes

GM Vehicle Diagnostic Service (1998-present)
Collision Repair Manuals (1998-present)
Frame sectioning information, panel replacement procedures, and recall information
Campaigns, service bulletins, and preliminary information for GM (1980-present)
GM Owner’s Manuals and glove box supplements (2003-present)
Easy-to-use keyword/document/number search

GDS2 (GLOBAL DIAGNOSTIC SYSTEM 2)

GDS2 is the diagnostic scan tool required to use MDI, MDI2 or J2534. It allows technicians to scan the vehicle for data and trouble codes. GDS2 is supported in 2014 and newer models. Support on earlier model year vehicles varies between Tech2Win and GDS2 software.

Techline Connect also does not require an internet connection to use GDS2 Diagnostics, thanks to the Stand-alone Mode. Bypass the log-in by selecting Stand-alone Mode from the log-in screen. Techline Connect will open with only the GDS2 icon. There will be no connection to the Service Information and programming. In the Stand-alone Mode, Techline Connect uses the MDI and vehicle connection function to establish vehicle communications.

Note: GDS2 can use 180 days offline without login in GM account. After 180 days you need to login to GM account for Techline Connect to renew the expiration date for GDS2

The features GDS2

Multiple Languages
GDS2 can be used offline for 180 days
Read codes, code status, freeze frame data, and clear codes
Read VIN, ECU part numbers, and software numbers
Record, store, and replay stored data
Control and monitor output control functions
Configure and reset functions
Record or display history of previous vehicle diagnostic sessions

Support models:

GDS2 support diagnostic for GM Global and Vinfast
Make support for GM Global:

– Buick
– Cadillac
– Chevrolet
– GMC
– Ravon
– Holden
– Daewoo

GDS not support for Opel and Vauxhall

2007 AND ALL PRIOR MODEL YEARS	2008 MODEL YEAR	2009 MODEL YEAR	2010 MODEL YEAR
No GDS2-support All model year 2007 and prior supported by Tech2/Tech2Win*	GDS2-supported vehicles: Chevrolet HHR (EUR)ALL others supported by Tech2/Tech2Win*	GDS2-supported vehicles: Chevrolet HHR (EUR) Daewoo Lacetti ALL others supported by Tech2/Tech2Win*	GDS2-supported vehicles: Buick Allure Buick LaCrosse Cadillac SRX Chevrolet Beat Chevrolet Camaro Chevrolet Cruze Chevrolet Equinox Chevrolet Sail Chevrolet Spark Daewoo Lacetti Daewoo Matiz GMC Terrain Holden BarinaSpark Holden Cruze Saab 9-5 ALL others supported by Tech2/Tech2Win*
2011 MODEL YEAR	2012 MODEL YEAR	2013 MODEL YEAR	2014 AND ALL FUTURE MODEL YEAR VEHICLES
GDS2-supported vehicles: Buick LaCrosse Buick Regal Cadillac SRX Chevrolet Beat Chevrolet Camaro Chevrolet Captiva** Chevrolet Cruze Chevrolet Equinox Chevrolet Orlando Chevrolet Sail Chevrolet Spark Chevrolet Tavera Chevrolet Volt Daewoo Alpheon GMC Terrain Holden BarinaSpark Holden Captiva 5 Holden Captiva 7 Holden Cruze Saab 9-4 Saab 9-5 ALL others supported by Tech2/Tech2Win*	GDS2-supported vehicles: Buick LaCrosse Buick Regal Buick Verano Cadillac SRX Chevrolet Aveo Chevrolet Beat Chevrolet Camaro Chevrolet Captiva** Chevrolet Cobalt Chevrolet Colorado Chevrolet Cruze Chevrolet Enjoy Chevrolet Equinox Chevrolet Malibu Chevrolet Orlando Chevrolet S10 Chevrolet Sail Chevrolet Sonic Chevrolet Spark Chevrolet Tavera Chevrolet Volt Daewoo Alpheon GMC Terrain Holden Barina Holden BarinaSpark Holden Captiva 5 Holden Captiva 7 Holden Colorado Holden Cruze Holden Malibu Saab 9-4 Saab 9-5 ALL others supported by Tech2/Tech2Win*	GDS2-supported vehicles: Buick Encore Buick LaCrosse Buick Regal Buick Verano Cadillac ATS Cadillac SRX Cadillac XTS Chevrolet Aveo Chevrolet Beat Chevrolet Camaro Chevrolet Captiva** Chevrolet Cobalt Chevrolet Colorado Chevrolet Cruze Chevrolet Enjoy Chevrolet Equinox Chevrolet N300 Chevrolet Malibu Chevrolet Onix Chevrolet Orlando Chevrolet Prisma Chevrolet S10 Chevrolet Sail Chevrolet Sonic Chevrolet Spark Chevrolet Spin Chevrolet Tavera Chevrolet Tracker Chevrolet Trailblazer Chevrolet Trax Chevrolet Volt Daewoo Alpheon GMC Terrain Holden Captiva 5 Holden Captiva 7 Holden Barina Holden BarinaSpark Holden Colorado Holden Colorado 7 Holden Cruze Holden Malibu Holden Trax Holden Volt ALL others supported by Tech2/Tech2Win*	GDS2-support ALL 2014 model year and future model years are supported by GDS2

SPS2 (Service Programming System)

The Service Programming System (SPS) is a PC application that updates (programs or reprograms) the flash calibration files that are stored in a vehicle’s ECM. To do this, the application reads VIN information from the vehicle, extracts the correct update data from the SPS application’s data files, then updates the vehicle reprogrammable memory with the data.

The Service Programming System (SPS2) is integrated in Techline Connect too, so it’s easy to update the calibration files of a vehicle’s control modules using pass-thru programming. The difference between the current SPS and the SPS2 in Techline Connect is that the vehicle connection is already established in the Techline Connect dashboard. There is no need to build the vehicle. Navigate SPS2 as you normally would for programming and other setup/configuration functions.

Note: SPS2 (Service Programming System), you need to login GM account on Techline Connect online

Supported Hardware

GM MDI
GM MDI 2
J2534 device

System Requirements:

OS: Windows: 10, 11 64 Bit
Free hard drive: 15 GB or more
CPU: Core i3 or above
Ram: 4GB or more

Recommendations

Prior to installation of Techline Connect on a PC, ensure it meets the requirements of Windows 10 Professional, 8 GB RAM or more and 100 GB of free drive space.

Computer system recommendations for dealerships to ensure proper performance of the application include:

Display: 15-inch-high definition (HD) display
Hard Drive: 500+ GB
System Memory (RAM): 8GB
Processor: Intel Core i7 5th Gen
Operating System: Windows 10 Professional, 64 bit

RESOLVING SERVICE PROGRAMMING ERRORS

When encountering a Service Programming System (SPS) error, follow the instructions for the error code, which will assist in understanding its cause and how to resolve it without replacing the control module. Error codes can include: E4398, E4399, E4403, M4404, M4413, E4414, E4423, E4491 and E6961.

Below are three common errors and how to correct them. For information on other error codes and how to address them.

E4398 — NO CALIBRATION DATA

CAUSE:

This error is the result of a missing or incomplete data record. The error is not related to the module being programmed or a vehicle issue.

RESOLUTION:

Contact the Techline Customer Support Center

E4399/E4403 — SEVERE ERROR

CAUSE:

This error typically stems from a loss of communication between the programming device and the module — which can be caused by either a drop in battery voltage, a delay in communication with the module or a vehicle issue, such as an interruption on the BUS (wiring, connector issue, aftermarket components, etc.).

RESOLUTION:

Maintain a minimum of 12.5 volts during programming. Attempt to reestablish communication with the module. This should first be done with GDS2 or Tech 2. If communication can be established, reattempt programming using “Replace and Program ECU” as the programming method.

If communication cannot be reestablished, deplete retained power by disconnecting the negative battery terminal for a minimum of 5 minutes. Reestablish and maintain battery power, and then attempt to communicate with the control module using MDI or Tech 2. Reattempt programming using “Replace and Program ECU.”

Some earlier model vehicles (pre-2007) may require the use of the Tech2 and “Legacy Tech 2” programming option in SPS in order to utilize a slower programming communication speed.

M4413/E4414 — CALIBRATIONS MARKED WITH AN ASTERISK (*)

CAUSE:

An asterisk (*) indicates that the SPS application is not recognizing the calibrations being read from the control module. This can be caused by a non-GM calibration programmed into the control module or an incomplete SPS data record.

RESOLUTION:

Refer to the latest version of SI Bulletin #08-06-04-006. If this information does not apply, restart the SPS application and select “Replace and Reprogram” as the programming method. This procedure will overwrite the unidentified software and calibrations.

Programming with Same Calibration

In an effort to decrease the number of unneeded programming events, reduce the risk of programming-induced faults, and support timely vehicle repairs, the Service Programming System (SPS) has been updated recently to prohibit or warn users against programming a control module with the same calibration that is already present in the control module. This SPS change prohibiting reprogramming using the same calibration applies to all 2017-2018 Buick, Cadillac, Chevrolet and GMC models.

Prohibited Programming

On 2017 and newer models, reprogramming a control module with the same calibration that is already in the control module will be prohibited by SPS. Users who attempt to reprogram a control module with its current calibration will receive the warning message “You are attempting to reprogram with the same calibration. This is not allowed for the selected ECU.” Selecting OK will end the programming event.

E6787 You are attempting to reprogram with the same calibration. This is not allowed for the selected ECU.

Warning on Same Calibration

On 2016 and older models, programming a control module with its current calibration is not prohibited, but is not a recommended service procedure. Users who attempt to reprogram a control module with the same calibration will receive a warning message.

M4521 You are attempting to reprogram with the same calibration.

Selecting Cancel will stop the programming event. If OK is selected, a second warning will appear.

Reprogramming with the same calibration is not recommended, but selecting OK again on the second warning message will allow the programming event to proceed.

M4521 GM does not recommend or support reprogramming with the same calibration.

These warning messages do not indicate an issue with the control module in question and that it should be replaced, only that the control module already has the calibration being programmed. Follow the diagnostic procedure in the appropriate Service Information to determine the root cause.

MDI 2 FOR NEXT-GENERATION APPLICATIONS

As the Next-Generation Digital Vehicle Platform continues to roll out, it will help power some of GM’s all-new models and systems — including electric vehicles, the 2020 Chevrolet Corvette, the Cadillac CT4 and some safety, infotainment and connectivity features. This will require using MDI 2 (Multiple Diagnostic Interface) should any diagnosing or programming be necessary for these applications.

These Next-Generation Digital Vehicle Platforms introduce new communication protocols such as CANFD (CAN Flexible Data) and DoIP (Diagnostics over Internet Protocols). Only the MDI 2 (Multiple Diagnostic Interface) can support the new CANFD protocol and Ethernet protocols for programming and diagnostics.

When diagnosing and programming a vehicle that employs one of these platforms, the EL-52100 MDI 2 must be used. EL-47955 MDI 1 does not have the capability to complete programming or setup procedures for these specific applications. Using MDI 1 could result in erroneous data or failed programming events that could lead to unnecessary module replacement.

TIP:

When programming a vehicle with the Next-Generation Digital Vehicle Platform, the vehicle must be in a Key Off power mode to successfully perform an SPS event. Also, be sure to follow the on-screen vehicle programming prompts during the process.

Changing the Diagnostic Tool Selection in TIS2Web

GM has recently updated the Service Programming System (SPS) with a new method of selecting a J2534 tool in TIS2Web.

A J2534 tool (MDI, MDI 2, or other J2534 device) is required in order to manage the transfer of data between a vehicle’s onboard network and a service technician’s PC. J2534 is an interface standard designed by the Society of Automotive Engineers (SAE) and mandated by the US Environmental Protection Agency (EPA) for vehicle Electronic Control Unit (ECU) reprogramming.

Selecting a Diagnostic Tool

From the Select Diagnostic Tool and Programming Process screen, select the J2534 Tool option for all J2534 tools (MDI, MDI 2, or other J2534 device).

The first time the J2534 Tool option is selected, a screen will appear asking the user to select a device type, such as the MDI, MDI 2 or other tool.

Changing a Diagnostic Tool Selection

Once a J2534 tool has been selected, reprogramming of a control module can be completed. If the J2534 tool selection needs to be changed, there is now a check box that must be selected next to the Select Programming Process menu on the Select Diagnostic Tool and Programming Process screen. Select the Reset J2534 Tool box and then select Next to set up a different J2534 tool.

New Tool Selection Method in TIS2WEB

Because of a recent update to the GM Service Programming System (SPS), a new method is available for selecting a J2534 tool in TIS2Web.

A J2534 tool (MDI, MDI 2, or other J2534 device) is required to manage the transfer of data between a vehicle’s onboard network and a service technician’s PC.

J2534 is an interface standard designed by the Society of Automotive Engineers (SAE) and mandated by the Environmental Protection Agency (EPA) for vehicle Electronic Control Unit (ECU) reprogramming.

Choosing a Tool

From the Select Diagnostic Tool and Programming Process screen, choose the J2534 Tool option for all J2534 tools (MDI, MDI 2 or other J2534 device).The first time that the J2534 Tool option is selected, a screen will appear (see graphic) asking the user to select a device type, such as the MDI, MDI 2 or other tool.

Changing a Selection

After choosing a J2534 tool, complete reprogramming of the control module. If the J2534 tool selection needs to be changed, mark the check box next to the Select Programming Process menu on the Select Diagnostic Tool and Programming Process screen. Next, choose the Reset J2534 Tool box and then select Next to set up a different J2534 tool.

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