Hummer H2. Manual - part 57

Fig. 1: Identifying Standard Wiring Diagram Symbols 

WIRING DIAGRAM GROUND NUMBER LOCATIONS 

  

WIRING DIAGRAM COMPONENT LOCATIONS

When trying to locate a component in a wiring diagram and you don't know the specific system where it is 
located, use this handy component locator to find the system wiring diagram in which the component is located. 
Then, go to that system and locate the component within the wiring diagram. 

For example, if you don't know the specific system in which the ignition switch is located, look up ignition 
switch in the wiring diagram component location tables and go to the appropriate wiring diagram(s) which 
contain either full or partial views of the ignition switch. The full view of the ignition switch is located in Power 
Distribution. 

The first listing for the component will be the full or most complete view of the component. Additional listings 
will be partial views of the component. Not all components are used on all models. 

All components will have a partial view in Ground Distribution and Power Distribution. Data Link Connectors 
show connecting circuits between modules. Alternate names for components may be listed in wiring diagram 
component locations tables. 

WIRING DIAGRAM COMPONENT LOCATIONS 

Component

Wiring Diagram

ABS Electronic Control Unit

Anti-Lock Brakes; Data Link Connectors

ABS Hydraulic Unit

Anti-Lock Brakes

Acceleration Sensor

Anti-Lock Brakes

Accessory Delay Relay

Power Windows

A/C Compressor Clutch Relay

Engine Performance

A/C Sensor

Engine Performance

A/C Pressure Switch

Engine Performance

Adaptive Lamp Control Module

Exterior Lights

Air Bag(s)

Air Bag Restraint System

Air Bag Module

Air Bag Restraint System

Air Bag Sensor(s)

Air Bag Restraint System

Air Injection Pump Relay

Engine Performance

Air Temperature Sensor

Overhead Console

Alternator (Generator)

Generators & Regulators

Anti-Theft Control Module

Anti-Theft System; Starters

Autolamp Control Relay

Headlight Systems; Daytime Running Lights

Automatic Shutdown (ASD) Relay

Engine Performance; Generators & Regulators

Autostick Switch

Engine Performance

Auxiliary Battery Relay

Generators & Regulators

Back-Up Lights

Back-Up Lights; Exterior Lights

Barometric (BARO) Pressure 
Sensor

Engine Performance

  

Battery Temperature Sensor

Engine Performance

Body Control Module

Body Control Computer; Anti-Theft System; Daytime Running 

Lights; Engine Performance; Headlight Systems; Warning Systems

Boost Control Solenoid

Engine Performance

Boost Sensor

Engine Performance

Brake Fluid Level Switch

Analog Instrument Panels

Brake On/Off (BOO) Switch

Cruise Control Systems; Engine Performance; Shift Interlock 

Systems

Buzzer Module

Warning Systems

Camshaft Position (CMP) Sensor

Engine Performance

Central Control Module

Anti-Theft System

Clockspring

Air Bag Restraint System; Cruise Control Systems; Steering Column 

Switches

Clutch Pedal Position Switch

Starters

Clutch Start Switch

Starters

Combination Meter

Analog Instrument Panels

Constant Control Relay Module 
(CCRM)

Engine Performance; Electric Cooling Fans

Convenience Center

Power Distribution; Illumination/Interior Lights

Convertible Top Motor

Power Convertible Top

Convertible Top Switch

Power Convertible Top

Crankshaft Position (CKP) Sensor

Engine Performance

Cruise Control Module

Cruise Control Systems

Cruise Control Switch

Cruise Control Systems

Condenser Fan Relay(s)

Electric Cooling Fans

Data Link Connector (DLC)

Engine Performance

Daytime Running Lights Module

Daytime Running Lights; Exterior Lights

Defogger Relay

Rear Window Defogger

Diagnostic Energy Reserve 
Module (DERM)

Air Bag Restraint System

Discriminating Sensor (Air Bag)

Air Bag Restraint System

Distributor

Engine Performance

Door Lock Actuators

Power Door Locks; Remote Keyless Entry

Door Lock Relay(s)

Power Door Locks

Electrochromic Mirror

Power Mirrors

Electronic Level Control (ELC) 
Height Sensor

Electronic Suspension

Electronic Level Control (ELC) 
Module

Electronic Suspension

Engine Coolant Temperature 
(ECT) Sending Unit

Analog Instrument Panels