GM Service Manual Online
For 1990-2009 cars only

Engine Wiring General

Figure 1:

L36


Object Number: 100620  Size: MF
(1)Fuel Injector Connectors
(2)Engine Wiring Harness
(3)Idle Air Control Valve Connector
(4)Mass Air Flow Sensor Connector
(5)Throttle Position Sensor Connector
(6)A/C Compressor Connector
(7)Engine Coolant Temperature Sensor Connector
(8)Engine Wiring Harness Bracket
(9)Knock Sensor Connector
(10)Oil Level Sensor Connector
Figure 2:

L36


Object Number: 100623  Size: MF
(1)EGR Valve Connector
(2)Generator Connector
(3)Heated Oxygen Sensor Connector
(4)Magnetic Speed Variable Assist Steering Connector
(5)Bulk Head Connector
(6)Oil Pressure Sensor Connector
Figure 3:

L67


Object Number: 100624  Size: SH
(1)Purge Valve
(2)Fuel Injector
(3)Engine Wiring Harness
(4)Purge Solenoid
(5)Oxygen Sensor Lead
(6)MAP Sensor
Figure 4:

L67


Object Number: 100626  Size: SH
(1)Fuel Injector
(2)Engine Wiring Harness
(3)Idle Air Control
(4)Mass Air Flow
(5)EGR Valve
(6)Throttle Position Sensor
(7)Coolant Temperature Sensor
Figure 5:

L47


Object Number: 100633  Size: MF
(1)Engine Wiring Harness
(2)Fuel Injector Harness Connector
(3)Transmission In-line Connector
(4)Heated Oxygen Sensor Connector
(5)Crankshaft Position Sensor Connector
(6)Oil Pressure Switch Connector
(7)A/C Compressor Connector
(8)Oil Level Sensor Connector
(9)A/C Compressor Connector
(10)Generator Connector
Figure 6:

L47


Object Number: 100634  Size: MF
(1)TP Sensor Connector
(2)EGR Valve Connector
(3)Evaporative Emission Canister Purge Valve Connector
(4)Ignition Control Module Connector
(5)Bulkhead Connector
(6)Heated Oxygen Sensor Connector
(7)Cruise Control Connector
(8)Starter In-line Harness Connector
(9)Camshaft Position Sensor Connector
(10)Power Steering Pressure Switch Connector
(11)Vehicle Speed Sensor Connector
(12)Knock Sensor Connector
(13)Park/Neutral Position Sensor Connector
(14)Engine Coolant Temperature Sensor Connector
(15)Idle Air control Valve Connector
(16)Fuel Injector Harness Connector
Figure 7:

L36 and L76


Object Number: 100628  Size: SH
(1)Engine Oil Pressure Sensor
(2)Vehicle Speed Sensor
(3)Knock Sensor Connector
Figure 8:

L36 and L67


Object Number: 100629  Size: SH
(1)A/C Pressure Switch
(2)Knock Sensor
(3)Solenoid Lead
(4)Oil Level Sensor
(5)Compressor Lead

Engine Wiring Battery Cable Routing

Figure 1:

Battery Cable Routing


Object Number: 100638  Size: MF
Figure 2:

L36


Object Number: 104906  Size: MF
Figure 3:

L67


Object Number: 104907  Size: MF
Figure 4:

Generator Cable Routing (L47)


Object Number: 104908  Size: MF
Figure 5:

Starter Cable Routing (L47)


Object Number: 100637  Size: MF
Figure 6:

Junction Block Assembly


Object Number: 100642  Size: SH
Figure 7:

Juntion Block Assembly (L47)


Object Number: 100646  Size: SH
Figure 8:

Junction Block Assembly (L36)


Object Number: 100649  Size: SH
Figure 9:

Engine Ground Cables (L36 and L67)


Object Number: 100653  Size: SH
Figure 10:

Engine Ground Cables (L47)


Object Number: 100656  Size: SH