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

IP Harness Passthrough to Wiper Motor Space


Object Number: 581308  Size: LF
(1)P103
(2)Cruise Control Module
(3)Brake Level Sensor
Figure 2:

Behind Brake Pedal Bracket


Object Number: 591434  Size: LF
(1)Cruise Control Release Switch Connector
(2)Stop Lamp Switch
(3)C201
(4)Stop Lamp Switch Connector C2
(5)Stop Lamp Switch Connector C1
(6)Cruise Control Release Switch