GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Astro - 2WD 🢒 Engine 🢒 Engine Electrical 🢒 Engine Electrical Component Views
Figure 1:

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

Battery Wiring (A4WD)
Object Number: 181454 Size: MF
(1)Underhood Fuse-Relay Center
(2)Battery
(3)G102
(4)Starter Motor
(5)Starter Solenoid
(6)G103
Figure 3:

Engine Wiring, RH Side
Object Number: 211877 Size: LF
(1)Ignition Coil Connector
(2)S122
(3)Ignition Control Module
(4)S120
(5)Ignition Control Module Connector
(6)Generator
(7)Generator Connector
(8)Ignition Coil
(9)Map Sensor Connector
(10)Map Sensor
(11)Evaporative Emission Canister Purge Solenoid Valve
(12)S123
(13)Evaporative Emission Canister Purge Solenoid Valve Connector
Figure 4:

I/P Fuse Block/Convenience Center Wiring
Object Number: 181450 Size: MF
(1)Convenience Center
(2)Turn/Hazard Flasher Module
(3)Horn Relay
(4)DRL Relay
(5)I/P Fuse Block
(6)C213
(7)C212
(8)Audio Alarm Module
Figure 5:

Transmission Wiring (RWD)
Object Number: 211899 Size: LF
(1)S333
(2)Transmission Connector
(3)Vehicle Speed Sensor
(4)Vehicle Speed Sensor Connector
(5)Vehicle Speed Sensor Shield (taped)
(6)Adapter
(7)Park/Neutral Position and Backup Lamp Switch 4-way Connector
(8)Park/Neutral Position and Backup Lamp Switch 7-way Connector
(9)Park/Neutral Position and Backup Lamp Switch
(10)Auto Transmission
Figure 6:

Transmission Wiring (A4WD)
Object Number: 211900 Size: LF
(1)Auto Transmission
(2)Transmission Connector
(3)Transfer Case
(4)Vehicle Speed Sensor
(5)Vehicle Speed Sensor Connector
(6)Vehicle Speed Sensor Shield (taped)
(7)S333
(8)C304
(9)Park/Neutral Position and Backup Lamp Switch 4-way Connector
(10)Park/Neutral Position and Backup Lamp Switch 7-way Connector
(11)Park/Neutral Position and Backup Lamp Switch
Figure 7:

Underhood Fuse-Relay Center
Object Number: 211913 Size: LF
(1)Upfitter Battery Power Stud
(2)Upfitter Ignition Power Stud
(3)Battery Feed
(4)D100
(5)D101
Figure 8:

Forward Lamps Harness, Left Side
Object Number: 181459 Size: LF
(1)C100
(2)P100
(3)C101
(4)S135
(5)C102
(6)C104
(7)LH Front Park/Turn Lamp Connector
(8)LH Front Park/Turn Lamp
(9)S106
(10)S105
(11)LH Front Side Marker Lamp Connector
(12)S104
(13)LH Front Side Marker Lamp
(14)S103
(15)S102
(16)Front End Discriminating Sensor Connector
(17)Front End Discriminating Sensor
(18)S107
(19)LH Hi/Low Beam Headlamp (Sealed Beam)
Figure 9:

Interior Lamp Modules, DLC Wiring
Object Number: 181460 Size: LF
(1)C211
(2)C201
(3)Interior Lamp Control Module
(4)Data Link Connector
(5)S208
Figure 10:

Bulkhead/Underhood Fuse-Relay Center Wiring
Object Number: 211879 Size: LF
(1)S111
(2)S113
(3)S114
(4)S110
(5)S112
(6)S109
(7)S108
(8)S115
Figure 11:

Crankshaft Position Sensor Wiring
Object Number: 211875 Size: LF
(1)Crankshaft Position Sensor
(2)Crankshaft Position Sensor Connector
Figure 12:

Instrument Cluster Wiring
Object Number: 211888 Size: LF
(1)S217
(2)S216
(3)Headlamp and Panel Dimmer Switch
(4)S215
(5)S214
(6)S213
(7)S211
(8)S207
(9)Daytime Running Lamps Module
(10)Daytime Running Lamps Module Connector
(11)S212
(12)S218
(13)S219
(14)S220
(15)S221
(16)S222
(17)S204