WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Brake Pressure Modulator Valve (BPMV) Power and Ground
Courtesy of GENERAL MOTORS CORP.
Fig 2: Accelerometer, BPMV, Data Link Connector (DLC)
Courtesy of GENERAL MOTORS CORP.
Fig 3: BRAKE Indicator and Control, ABS Indicator and Control