Circuit/System Verification
WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Attempt to program the keyless entry transmitter, refer to Remote Control Door Lock and Theft Deterrent Transmitter Programming (North America, except Canada) or Remote Control Door Lock and Theft Deterrent Transmitter Programming (Canada, Europe, Asia, Middle East) . The transmitter should program.