GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1999 🢒 Astro - 4WD 🢒 Body and Accessories 🢒 Wiring Systems 🢒 Power and Grounding 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:

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

Engine Wiring
Object Number: 297594 Size: LF
(1)Linear EGR Valve Solenoid Connector
(2)Linear EGR Valve Solenoid
(3)G105
(4)Engine Coolant Temperature Sensor
(5)Engine Coolant Temperature Sensor Connector
(6)Crankshaft Position Sensor
(7)Crankshaft Position Sensor Connector
Figure 5:

Rear Heater Wiring (Electrical)
Object Number: 374527 Size: LF
(1)G301
(2)Heater Resistor Pack Rear Connector
(3)Heater Blower Motor Ground Rear Connector (C1)
(4)Heater Blower Motor Power Rear Connector (C2)
(5)Heater Blower Motor Rear
(6)Heater Resistor Pack Rear
Figure 6:

A/C Wiring Rear
Object Number: 374534 Size: LF
(1)A/C Resistor Pack Rear Connector
(2)A/C Resistor Pack Rear
(3)G404
(4)A/C Blower Motor Rear
(5)A/C Blower Motor Rear Ground Connector
(6)A/C Blower Motor Rear Power Connector
Figure 7:

RH D Pillar Wiring (Electrical)
Object Number: 281342 Size: MH
(1)G401
(2)G403
(3)S407