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

Engine Compartment (Left Side)


Object Number: 277990  Size: MF
(1)Forward Lamp Harness
(2)Vehicle Control Module (VCM) (Gas Only)
(3)Auxiliary Battery
(4)Positive Auxiliary Battery Lead
(5)Electronic Brake Control Module (EBCM)
(6)Brake Pressure Warning Switch
(7)Engine Harness
(8)Underhood Fuse-Relay Center
(9)Brake Lamp Relay
(10)MaxiFuses®
(11)Diode 1
(12)Starter Relay
(13)A/C Compressor Clutch Relay
(14)Horn Relay
(15)Fuel Pump Relay
Figure 2:

Horns


Object Number: 405983  Size: MF
(1)Horn "F" Note
(2)Horn "A" Note
(3)Horn "A" Note (Special Grille)