GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 2WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Power and Grounding Component Views
Figure 1:

Battery Wiring (RWD)
Object Number: 181452 Size: MF
(1)Fuse Block - Underhood
(2)Battery
(3)G102
(4)Starter
(5)Starter Solenoid
(6)G103
Figure 2:

Battery Wiring (AWD)
Object Number: 181454 Size: MF
(1)Fuse Block - Underhood
(2)Battery
(3)G102
(4)Starter
(5)Starter Solenoid
(6)G103
Figure 3:

LH Forward Lamp Ground
Object Number: 297601 Size: MF
(1)G101
Figure 4:

Left Front Interior Wiring
Object Number: 582024 Size: LF
(1)C200
(2)S240
(3)S200
(4)S201
(5)C223
(6)C202
(7)Inflatable Restraint I/P Module
(8)Auxiliary Power Outlet Front #1 Connector
(9)Auxiliary Power Outlet Front #2 Connector
(10)Cigar Lighter Connector
(11)S234
(12)Engine Cover Ground (G201)
(13)Inflatable Restraint Sensing and Diagnostic Module
(14)Inflatable Restraint Sensing and Diagnostic Module Connector
(15)C333
(16)S242
(17)C300
(18)S325
(19)Center High Mounted Stop Lamp (CHMSL) Resistor
(20)S326
(21)S324
(22)S327
(23)Park Brake Switch
(24)S303
(25)S330
(26)S246
(27)S305
(28)S246
Figure 5:

Fuse Block - I/P Location View
Object Number: 597158 Size: MF
(1)Convenience Center
(2)Turn Signal/Hazard Flasher Module
(3)Horn Relay
(4)Fuse Block - I/P
(5)C213
(6)C212
Figure 6:

RSA Controller/Auxiliary Power Outlet - Rear Wiring
Object Number: 298001 Size: LF
(1)Rear Seat Audio (RSA) Controller
(2)Auxiliary Power Outlet - Rear Connector
(3)Auxiliary Power Outlet - Rear
(4)Rear Seat Audio (RSA) Controller Connector