Communication Interface Module Replacement
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
If the OnStar® communication interface module is replaced, the setup procedure needs to be performed. Please refer to OnStar Reconfiguration