The GM-47976-512 Adapter, featuring internal active circuits, enables the previously essential GM-47976-503 Cable to be used on vehicles equipped with SENT fuel pressure transducers and Stop/Start systems. Connect the GM-47976-512 Adapter to the GM-47976-503 Cable, which connects to a DMU modified with the GM-47976-507 SENT Adapter. This allows vehicles with SENT systems, including those on both standard and Stop/Start models, to be tested.