I/P Clock Loses or Gains Time (Reprogram Instrument Panel Cluster Using SPS Pass-Thru Programming)

This bulletin is being revised to reflect that programming can only be done through the TIS2Web application. Please discard Corporate Bulletin Number 05-08-49-028 (Section 08 - Body and Accessories).

Some customers may comment that the clock on the I/P loses or gains time.

This condition is due to the production software not automatically updating the time of day.

DO NOT REPLACE THE INSTRUMENT PANEL CLUSTER FOR A CLOCK THAT IS LOSING OR GAINING TIME.

Important:  Before programming, it is necessary to slow the baud rate in the TIS terminal. Failure to slow the baud rate could result in locking up the I/P. Contact Techline to obtain a VCI number in order to complete the programming.

To correct this condition, using the Tech 2® SPS Pass-Thru function, reprogram the Instrument Panel Cluster with calibration P/N 15798425 . This calibration is available on TIS 11.35 dated November 6, 2005 or later. Follow the appropriate procedure below to reset/slow the baud rate of the TIS terminal:

TIS2Web

1. Log in to TIS on the web through Dealerworld (in Canada, GM infoNET).
2. Enter Service Programming System.
3. Click on the "Start SPS" button.
4. On the screen in order to select "Tech2 Legacy Pass-Thru" or "Tech2 Remote", click on the "settings" button in the lower left corner.
5. Click on the "Diagnostics" tab.
6. Change the Baud Rate to 57600.
7. Click OK.
8. Contact Techline (1-800-828-6860 English or 1-800-503-3222 French) to get a VCI number.
9. Proceed with SPS Pass-Thru programming to reprogram the I/P.

Important:  The I/P Module may not be listed in the modules to choose from. If this happens, select any one of the module listed in order to proceed to the next screen. On the next screen, choose "VCI Number" to proceed to the screen that will allow the VCI number to be entered.

10. After programming is complete, go back into the settings to change the Baud Rate back to 115200.

For vehicles repaired under warranty, use: