GM Service Manual Online
For 1990-2009 cars only

Cellular Telephone Setup w/o U45

Perform the following procedures after installing the UV8 cellular telephone kit, or after replacing the cellular telephone handset, cellular telephone module or dash integration module (DIM).

Set Up the DIM for Cellular Telephone UV8

Verify that the dash integration module (DIM) is set up to recognize the UV8 cellular telephone option. This procedure is necessary to ensure that the vehicle steering wheel controls perform cellular telephone functions in place of the HVAC functions. The procedure is also necessary to enable the driver information center cellular telephone messages. For complete instructions for DIM programming and setup, refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

  1. Connect a scan tool to the data link connector (DLC).
  2. Turn ON the ignition, with the engine off.
  3. Under the dash integration (DIM) main menu, select Special Functions.
  4. Under the Special Functions menu, select Set Options.
  5. Under the Set Options menu, select Miscellaneous Options #1.
  6. Under Miscellaneous Options #1, select Phone. Save the selected option.
  7. Exit the scan tool DIM menu.

Turn On the Handset Hands--Free Auto Mute Feature

It is necessary to turn on the hands-free auto mute feature. If this feature is OFF and you are using the handset connected to the vehicle but undocked, the system automatically ends the call when you dock the handset. The hands-free auto mute feature, turned ON, ensures that when you dock the handset while in a call, you will be switched to hands-free operation automatically.

To turn on this feature, program the handset for HF AUTO MUTE ON, as follows:

  1. On the handset, press Fcn, then menu 1.
  2. Press the * key to scroll to the Phone Options menu. The handset display will show PHONE OPTIONS.
  3. Press Sto.
  4. Press the * key to scroll to the Call Options submenu. The handset display will show CALL OPTIONS.
  5. Press Sto.
  6. Press the * key to scroll to the Hang-Up for Hands-Free feature. The handset display will show HF AUTO MUTE OFF, if the feature is off.
  7. If the feature is OFF, press Sto to turn the feature ON. The handset display will show HF AUTO MUTE ON.
  8. Press End to exit the menu.

Program the Handset for Cellular Service

Verify that the handset is programmed for cellular service as required by the owner's cellular service provider.

Cellular Telephone Setup w/U45

Perform the following procedure to set up the cellular telephone module for CommuniportPC voice recognition functions.

Cellular Telephone Module Setup for CommuniportPC (U45) Voice Recognition

The following procedure disables the normal hands-free cellular telephone voice recognition, and allows the CommuniportPC voice recognition to take effect.

  1. Connect a scan tool to the data link connector (DLC).
  2. Turn ON the ignition, with the engine off.
  3. Under the cellular telephone (PHN) main menu, select Special Functions.
  4. Under the Special Functions menu, select Phone Steering Wheel Controls.
  5. A screen appears titled Setting Options. This screen gives the instructions for the procedure. After reading the instructions, press DONE to proceed to the next screen, where you actually perform the procedure.
  6. The screen that appears is titled Phone Steering Wheel Controls. It has one line available, Disable Phone Steering Wheel Controls.
  7. Pressing ENTER toggles an asterisk (*) ON or OFF next to the Disable Phone Steering Wheel Controls line. If the vehicle has CommuniportPC (U45), turn ON this line, marked with *, in order to disable the normal cellular telephone voice recognition.
  8. Pressing SAVE OPTIONS leads back to the Special Functions menu.
  9. Exit the scan tool PHN menu.