GM Service Manual Online
For 1990-2009 cars only
Figure 1:

Low Brake Fluid Level System Components


Object Number: 564837  Size: LF
(1)Cruise Control Module
(2)Brake Fluid Level Sensor
(3)Master Cylinder Reservoir
(4)C117
(5)Windshield Wiper Motor
Figure 2:

Brake Warning System Components


Object Number: 564843  Size: LF
(1)Park Brake Assembly
(2)Park Brake Switch