2016 Chevrolet Impala Limited LSFACTORY OEM SERVICE PROCEDURE

Communication Interface Module Replacement

Fig 1: Communication Interface Module
GM1706932Courtesy of GENERAL MOTORS COMPANY
Callout Component Name

Preliminary Procedures

  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Pull back the left rear compartment trim panel in order to expose the communication interface module.
  3. For programming and set up, Refer to Control Module References .
1 Communication Interface Bolt/Screw (Qty: 3)
CAUTION:

Refer to Fastener Caution .

  • The vehicle communication interface module (VCIM) has a specific set of unique numbers that tie the module to each vehicle. These numbers, the 10-digit station identification and the 11-digit electronic serial number, are used by the National Cellular Network and OnStar® to identify the specific vehicle. Because these numbers are tied to the vehicle identification number of the vehicle, you must never exchange these parts with those of another vehicle.
  • After replacing the vehicle communication interface module, you must reconfigure the OnStar® system. Failure to reconfigure the system will result in an additional customer visit for repair. In addition, pressing and holding the white dot button on the keypad will NOT reset this version of the OnStar® system. This action will cause a DTC to set.
  • When replacing the VCIM be sure to transfer Bluetooth Antenna, if equipped.

Tighten 
5 N.m (44 lb in)
2 Communication Interface Module
Procedure 
For programming and set up information, refer to Control Module References .
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.