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

LH Lower Instrument Panel near Steering Column


Object Number: 520539  Size: MF
(1)Cruise Control Brake Switch
(2)Brake Switch
(3)SIR Branch
(4)SIR SDM Harness
(5)Cruise Control Switch
Figure 2:

Front of Dash


Object Number: 520435  Size: MF
(1)Cruise Control Cable
(2)Cruise Control Module
(3)Throttle Body Bracket