Communication Interface Module Replacement

WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of GENERAL MOTORS COMPANY

NOTE: Callouts in the following chart represent components shown in graphic above.

Callout	Component Name
Preliminary Procedure BATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (3.6L LGX) or BATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (2.0L LTG)
1	Communication Interface Module Procedure Disconnect the electrical connector. Unlock the retaining tabs. Control Module References - Programming and Setup

Callout

Component Name

Preliminary Procedure
BATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (3.6L LGX) or BATTERY NEGATIVE CABLE DISCONNECTION AND CONNECTION (2.0L LTG)

Communication Interface Module

Procedure

Disconnect the electrical connector.
Unlock the retaining tabs.
Control Module References - Programming and Setup