Hummer H2. Manual - part 1259

Fig. 67: Rear Wiper/Washer Circuit 

 

2004 Hummer H2 

SYSTEM WIRING DIAGRAMS Hummer - H2

  

2004 ACCESSORIES & EQUIPMENT

Wiring Systems - Hummer H2 

SPECIFICATIONS 

FASTENER TIGHTENING SPECIFICATIONS 

Fastener Tightening Specifications 

DIAGNOSTIC INFORMATION AND PROCEDURES 

UTILITY/VAN ZONING 

All grounds, in-line connectors, pass-through grommets, and splices have identifying numbers that correspond 
to where they are located in the vehicle. The following table explains the numbering system. 

Application

Specification

Metric

English

BEC Retaining Bolts

9 N.m

80 lb in

Fender Upper Brace Bolts

25 N.m

18 lb ft

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

Fig. 1: Utility/Van Zoning 
Courtesy of GENERAL MOTORS CORP. 

Utility/Van Zoning 

ELECTRICAL SYMBOLS 

Electrical Symbols 

Callout 

Numbers

Zone Description

100-199

Engine compartment (All forward of the dash panel) 
001-099 are additional for the engine compartment (Only to be used if all 100-199 
items are used)

200-299

Within the instrument panel area

300-399

Passenger compartment (From instrument panel to the rear wheelhouse)

400-499

Luggage compartment (From the rear wheelhouse to the rear of the vehicle

500-599

Within the left front door

600-699

Within the right front door

700-799

Within the left rear door

800-899

Within the right rear door

900-999

Within the liftgate or endgate door

OLD Symbol

NEW Symbol

or 

Description

Supplemental Inflatable Restraint (SIR) or Supplemental 

Restraint System (SRS) Icon 

This icon is used to alert the technician that the system 

contains SIR/SRS components that require certain precautions 

before servicing.

On-Board Diagnostic (OBD II) Icon 

This icon is used to alert the technician that the circuit is 

essential for proper OBD II emission controls circuit 

operation. Any circuit which, if it fails, causes the malfunction 

indicator lamp (MIL) to turn on, is identified as an OBD II 

circuit.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2

  

Important Icon 

This icon is used to alert the technician that there is additional 

information that will aid in servicing a system.

Voltage Indicator Boxes 

These boxes are used on schematics to indicate when voltage 

is present at a fuse.

Partial Component 

When a component is represented in a dashed box, the 

component or its wiring is not shown in its entirety.

Entire Component 

When a component is represented in a solid box the 

component or its wiring is shown in its entirety.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Wiring Systems - Hummer H2