GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2006 🢒 Lucerne 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Hydraulic Brake Component Views
Figure 1:

Left Rear of Engine Compartment
Object Number: 1707563 Size: LF
(1)Master Cylinder Reservoir
(2)Brake Fluid Level Switch
(3)Electronic Brake Control Module (EBCM)
Figure 2:

Lower Left Side of I/P
Object Number: 1707525 Size: LF
(1)Park Brake Switch
(2)Brake Pedal Position Sensor
(3)Accelerator Pedal Position (APP) Sensor