GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
HUMMER
🢒
2007
🢒
H3
🢒
Power and Signal Distribution
🢒
Wiring Systems and Power Management
🢒 Power and Grounding Component Views
Figure
1:
Front Engine Compartment-LLR
(1)
Battery
(2)
Fuse Block-Underhood
(3)
Positive Battery Studs
(4)
G104
(5)
Starter
(6)
G120
(7)
G110
(8)
Ground Strap
(9)
G100
(10)
Generator Control Module
Figure
2:
Front Engine Compartment
(1)
Battery Positive Voltage
(2)
Starter Solenoid
(3)
Starter Motor
(4)
G100
(5)
OnStar Fuse
(6)
Battery
(7)
Generator Connector
(8)
Generator
Figure
3:
Engine Components - Left Side (L52)
(1)
Evaporative Emission (EVAP) Canister Purge Soleniod Valve
(2)
Starter Solenoid
(3)
Knock Sensor (KS) Bank 2
(4)
Crankshaft Position (CKP) Sensor
(5)
G102
(6)
G103
(7)
Engine Block Heater
(8)
Camshaft Position (CMP) Sensor - Intake
(9)
Camshaft Position (CMP) Sensor - Exhaust
Figure
4:
Fuse Block - Underhood Connectors
(1)
C125 Body Harness to Engine Harness (Transfer Case)
(2)
Fuse Block - Underhood C4 (Engine Harness)
(3)
Fuse Block - Underhood C3 (Engine Harness)
(4)
C115 Forward Lamp Harness to Body Harness
(5)
Fuse Block - Underhood C1 (Body Harness)
(6)
Fuse Block - Underhood C2 (Body Harness)
Figure
5:
Ground Locations
(1)
G106
(2)
G320
(3)
G310
(4)
G340
(5)
Chassis Harness
(6)
G420
(7)
G345 and or G350
(8)
Body Harness
(9)
G300
(10)
Battery Positive Voltage (Starter Solenoid)
(11)
Starter Crank Voltage
(12)
G102
(13)
G120 (Ground Strap-Chassis)
(14)
G103
(15)
G110 (Ground Strap-Engine Block)
(16)
G104 (Negative Battery Cable)
(17)
G105
(18)
G100 (Battery Ground)
(19)
Engine Harness
Figure
6:
Steering Column Harness Components
(1)
Inflatable Restraint Steering Wheel Module Coil
(2)
Inflatable Restraint Steering Wheel Module Connectors
(3)
Ignition Switch
(4)
Ignition Lock Cylinder Control Actuator (M30)
(5)
Steering Wheel Position Sensor (JL4)
(6)
C201 Steering Column Harness to I/P Harness
(7)
C275 Steering Column Harness to I/P Harness
(8)
Ignition Switch
(9)
Turn Signal/Multifunction Switch
