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

Instrument Panel Harness to Power Brake Booster


Object Number: 689817  Size: SF
(1)G108
(2)C119
(3)Power Brake (P/B) Booster Pump Motor
(4)Power Brake (P/B) Booster Fluid Flow Switch
(5)Brake Fluid Level Switch
Figure 2:

Instrument Panel Harness to IP Mounted Components, Right Front View


Object Number: 689502  Size: MF
(1)Power Brake (P/B) Booster Pump Motor Relay
(2)Park Brake Pump Motor Relay
(3)Trailer Stop Lamp Relay
(4)Transmission Control Relay - MTW/MX4/Ignition Relay -- Engine Controls - L18
(5)ABS Relay Center
(6)Fuse Block 2 -- Underhood
(7)Fuse Block 1 -- Underhood
(8)C123
(9)C121
(10)Windshield Washer Fluid Pump
(11)Windshield Washer Reservoir