Cadillac CTSX-HAR PAC Onstar Interface Instruction Manual
Learn how to retrofit XM in your 1st Generation Cadillac CTS and SRX (non-navigation radio only) with the Cadillac CTSX-HAR PAC Onstar Interface. This installation guide provides step-by-step instructions for safely installing the interface, including the requirements and precautions to take. Ensure your XM tuner and antenna are in working order and follow the instructions carefully for a successful installation.