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Home >> Buick >> 2005 >> Century Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Cellular Communication System >> Repair Instructions >> Communication Interface Module Replacement >> Installation Procedure
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Installation Procedure

  1. Record the 11-digit electronic serial number (ESN) and the 10-digit station identification (STID) number from the label on the new VCIM.
  2. Position the communication interface module to the bracket (2).
    3. Fig 1: Communication Interface Module & Bolts
    GM1364564Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the bolts (1) to the communication interface module.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  4. Connect the GPS antenna cable to the module.
  5. Connect the electrical connectors to the module.
  6. Connect the cellular antenna cable to the module.
    7. Fig 2: Communication Interface Module Electrical Connectors
    GM813766Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: After replacing the communication interface module, you must reconfigure the OnStar® system. Failure to reconfigure the system will result in an additional customer visit for repair.
  7. Reconfigure the OnStar® system. Refer to OnStar Reconfiguration .
  8. Position the assembly to the studs.
  9. Install the bracket nuts to the communication interface module.

    Tighten:  Tighten the nuts to 4 N.m (35 lb in).

    10. Fig 3: Communication Interface Module Bracket Nuts
    GM769963Courtesy of GENERAL MOTORS CORP.
  10. Install the communication interface module cover.
    11. Fig 4: Communication Interface Module Cover
    GM769971Courtesy of GENERAL MOTORS CORP.
  11. Close the rear compartment.
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