GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Astro - 4WD 🢒 Body and Accessories 🢒 Lighting Systems 🢒 Lighting Systems Component Views
Figure 1:

Forward Lamp Harness, Right Side
Object Number: 374516 Size: LF
(1)Window Washer Pump Rear
(2)S101
(3)Park/Turn Lamp Right Front
(4)Park/Turn Lamp Right Front Connector
(5)Side Marker Lamp Right Front Connector
(6)Side Marker Lamp Right Front
(7)S100
(8)Hi/Lo Headlamp (Sealed Beam) Right
(9)G100
(10)Blower Motor Front
(11)Windshield Washer Pump Front
(12)Blower Motor Resistor and Relay Pack
Figure 2:

Forward Lamp Harness, Left Side (Electrical)
Object Number: 497930 Size: LF
(1)Left Hi/Low Beam Headlamp (Sealed Beam)
(2)C100
(3)P100
(4)C101
(5)S135
(6)C102
(7)S106 (Late 98)
(8)S103 (Late 98)
(9)Left Front Park/Turn Lamp Connector
(10)Left Front Park/Turn Lamp
(11)S102 (Late 98)
(13)S105
(14)Left Front Side Marker Lamp Connector
(15)S104
(16)Left Front Side Marker
(19)Front End Discriminating Sensor Connector
(20)Front End Discriminating Sensor
(21)S107
Figure 3:

Headlamp Assembly (Left Side)
Object Number: 297866 Size: MF
(1)High Beam Headlamp (Composite)
(2)Low Beam Headlamp (Composite)
Figure 4:

Brake Pedal Position (BPP)
Object Number: 297850 Size: MF
(1)Brake Pedal Position (BPP) Switch Connector
(2)Brake Pedal Position (BPP) Switch
Figure 5:

IP Fuse Block/Convenience Center Wiring (Electrical)
Object Number: 374538 Size: LF
(1)C212
(2)Audio Alarm Module
(3)Convenience Center
(4)Turn/Hazard Flasher Module
(5)Horn Relay
(6)DRL Relay
(7)IP Fuse Block
(8)C213
Figure 6:

Dome Lamp Defeat Switch
Object Number: 281314 Size: SF
(1)Dome Lamp Defeat Switch
(2)Dome Lamp Switch
Figure 7:

Left Kick Panel Wiring
Object Number: 374521 Size: LF
(1)G300
(2)C301
(3)C303
(4)S300
(5)Left Door Jamb Switch
Figure 8:

Vanity Mirror Wiring
Object Number: 498067 Size: LF
(1)S237
(2)Vanity Lamp Connector
(3)Vanity Lamp
(4)S236
Figure 9:

Left Courtesy Lamp Wiring
Object Number: 498027 Size: SF
(1)D300
(2)Left Courtesy Lamp
Figure 10:

Door Courtesy Lamp
Object Number: 297836 Size: MF
(1)Door Courtesy Lamp
Figure 11:

Side Door Contact Plate Wiring
Object Number: 297705 Size: MH
(1)Right B-Pillar
(2)Side Door Jamb Switch Connectors
(3)Side Door Jamb Switch
(4)Side Door Contact Plate
Figure 12:

Right B Pillar Wiring (Passenger Van)
Object Number: 297822 Size: MH
(1)Right Stepwell Lamp
(2)Right Courtesy Lamp
Figure 13:

Right B Pillar Wiring (Cargo Van)
Object Number: 297830 Size: MH
(1)Right Stepwell Lamp
(2)Right Courtesy Lamp
Figure 14:

Dome/Reading Lamp Wiring
Object Number: 297818 Size: MF
(1)Dome Lamp
(2)Dome/Reading Lamps
(1)Dome Lamp
(3)Reading Lamps
Figure 15:

Liftgate Strut Switch Wiring
Object Number: 498091 Size: LF
(1)Left Liftgate Strut Switch
(2)Left Liftgate Strut Switch Connector
(3)Liftgate Lock/Unlock Relay
(4)S334
(5)S335
Figure 16:

Center High Mounted Stoplamp
Object Number: 297812 Size: MF
(1)Center High Mounted Stop Lamp Connector
(2)Center High Mounted Stop Lamp (CHMSL)
Figure 17:

License Plate Wiring
Object Number: 297808 Size: MF
(1)License Lamp Connector
(2)License Lamp
Figure 18:

Rear Lamps Wiring
Object Number: 297806 Size: MF
(1)Tail/Stop-Turn Lamp
(2)Side Marker Lamp Rear
(3)Backup Lamp