Tech2 Custom Update Procedure; Snapshot Upload / Display - GMC Tech2 User Manual

Tech2 Custom Update Procedure

To perform a custom Tech2 update to backdate the scan tool or install different language
software:
1. Connect the scan tool to the PC using the RS-232 cable.
2. Power up the scan tool using the AC power supply that came with the tool.
3. At the PC, launch TIS2Web.
4. From the TIS2Web main screen, select Software Download.
5. At the "Select Diagnostic Tool for Download" screen, select Tech2 and "Custom" to
allow backdating or installing of non-NAO software on the scan tool. After confirming
the selection, select Next. A message will appear indicating the PC is reading the
contents of the diagnostic tool.
6. A "Select the Applications" screen appears. The left side of the screen lists software
release numbers. Select the "+" sign to see the list of languages for each release.
7. Select the desired software version and language either by double-clicking on it or by
highlighting the desired language file; then click Select in the middle of the screen. The
selected software will appear in the right side of the screen. Click on the tabs to
compare the current and selected scan tool software. Click Download to proceed.
8. A "Performing the Software Download" screen appears to track the download status.
9. When the download is complete, a "Download Finished" screen appears. Click Close to
close the application.

Snapshot Upload / Display

The Snapshot Upload/Display function of TIS2Web provides a means for viewing scan tool
snapshot data, as well as freeze frame and capture info data on the PC. This data can be
analyzed in a variety of ways to determine when and where a fault may have occurred.
Using the Snapshot display feature involves three steps:
1. Capture snapshot(s) with the scan tool.
2. Upload the snapshot(s) to the computer.
3. View the snapshot(s) using the TIS2Web Snapshot Upload/Display function.
The following procedures describe how to capture, upload and view a snapshot.
Capturing a Snapshot of the Vehicle Data Stream
1. Connect the Tech2 to the vehicle Data Link Connector (DLC).
2. Power up the Tech2 and press the ENTER key at the title screen.
3. From the Main Menu select F0: Diagnostics.
4. Enter all vehicle information as requested on the scan tool's display (powertrain, body,
chassis).
5. From the application menu, select F3: Snapshot.
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At the next screen, select the desired system to snapshot (e.g. Engine,
Transmission, ATC).
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