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

Engine Harness Components (LP4/L21), Upper Left Rear


Object Number: 216233  Size: LF
(1)Distributor Ignition (DI) Control Module C2 (2 cavities)
(2)Distributor Ignition (DI) Control Module C1 (4 cavities)
(3)Distributor
(4)Oxygen (O2) Sensor
(5)Engine Oil Pressure Gauge Sensor and Fuel Pump Switch
(6)Ignition Coil C2 (2 cavities)
(7)Ignition Coil C1 (2 cavities)
Figure 2:

Ether Injector (LG5)


Object Number: 220284  Size: MF
(1)Ether Injector Control Valve
Figure 3:

IP Harness to Dash Panel, Right Forward


Object Number: 230863  Size: LF
(1)Relay Center
(2)Vehicle Speed Sensor (VSS) Buffer
(3)Fuse Block 2
(4)Fuse Block 1
(5)IP Fuse Block/Mini-Relay Center
(6)Flasher/Relay Center, Position 3
(7)Flasher/Relay Center, Position 2, Exhaust Brake Relay
(8)Flasher/Relay Center
(9)Flasher/Relay Center, Position 1
Figure 4:

Engine Harness Components, Upper Right Rear


Object Number: 220287  Size: MF
(1)Ether Injector Control Valve
(2)Air Intake Heater Relay C1 (ring terminal)
(3)Air Intake Heater Relay
(4)Air Intake Heater Relay C2 (2 cavities)
(5)Ether Injector Sensor
Figure 5:

Left Side of IP (Components), Forward


Object Number: 220291  Size: MF
(1)IP Lamps Dimmer Switch
(2)Instrument Cluster
(3)Exhaust Brake Clutch Switch Jumper Plug
(4)Exhaust Brake Clutch Switch
(5)Upfitter Connector (23 cavities)
(6)Upfitter Connector Jumper (23 cavities)
(7)Upfitter IP (+) Junction Block
(8)Daytime Running Lamp (DRL) Control Module
(9)Driver Information Center
(10)Headlamps Switch
Figure 6:

Engine Harness to Generator (LP4/L21), Upper Right Forward


Object Number: 216265  Size: LF
(1)Generator Fuse
(2)Generator C2 (ring terminal)
(3)Generator C3 (2 cavities)
(4)Generator R Terminal
(5)Generator
(6)Generator BATT Terminal
(7)Generator C1 (ring terminal)
Figure 7:

Engine Harness to Generator (LP4/L21), RH Front


Object Number: 220292  Size: MF
(1)Generator BATT Terminal
(2)Generator Connector
(3)Generator
Figure 8:

Engine Harness and Battery Cables to Starter (LG5), Upper Right Front (Components)


Object Number: 220297  Size: MF
(1)Starter Solenoid
(2)Starter BATT Terminal
(3)Starter SW Terminal
(4)Starter Solenoid C4 (ring terminal)
(5)Starter Solenoid C2 (ring terminal)
(6)Starter Motor
(7)Positive Battery Cable
Figure 9:

Starter Harness Components (LG5 w/KQR), RH Front


Object Number: 232019  Size: LF
(1)Starter Solenoid
(2)Starter SW Terminal
(3)Starter BATT Terminal
(4)Starter Motor
(5)Starter Thermal Switch
(6)Starter Harness
(7)Engine Harness
Figure 10:

Engine Harness and Battery Cable to Starter (LP4/L21), Upper Right Front


Object Number: 220294  Size: MF
(1)Starter Solenoid
(2)Starter Motor
(3)Starter SW Terminal
(4)Starter BATT Terminal
(5)Starter Solenoid C1 (ring terminal)
(6)Starter Solenoid C4 (ring terminal)
(7)Starter Solenoid C2 (ring terminal)
(8)Fusible Link M
(9)Positive Battery Cable