Repair Diagrams for 2004 GMC Sierra 2500 HD Engine, Transmission, Lighting, AC, Electrical & Warning Systems

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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2004 GMC Sierra 2500 HD car and truck repair procedures including GMC engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your 2004 GMC Sierra 2500 HD automobile. Try the Automotix DIY solution today!

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We have info for following modifications of 2004 GMC Sierra 2500 HD

2004 GMC Sierra 2500 HD 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:U
2004 GMC Sierra 2500 HD 8.1 V8 GAS, CID:496, Fuel Injection, Aspiration:496, Engine VIN:, Desg:G
2004 GMC Sierra 2500 HD 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:1
2004 GMC Sierra 2500 HD 6.6 V8 DIESEL, CID:403, Fuel Injection, Aspiration:403, Engine VIN:, Desg:2

WIRING DIAGRAMS FOR 2004 GMC Sierra 2500 HD AUTOMOBILES

OEM drawn wiring diagrams for most 2004 GMC Sierra 2500 HD cars and light trucks sold in the U.S.

2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

Components on diagram:

Windshield Wiper Motor Module

Instrument Panel Cluster

Washer Fluid Level Sensor

Windshield Washer Fluid Pump

2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

Components on diagram:

Seat Adjuster Switch Driver

Seat Rear Vertical Motor Driver

Seat Horizontal Motor Driver

Seat Front Vertical Motor Driver

2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

Components on diagram:

Powertrain Control Module

Engine Control Module

AC Compressor Clutch

HVAC Control Module

AC Low Pressure Switch

2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

Components on diagram:

Rear Seat Entertainment Assembly

2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

Components on diagram:

Driver Door Module

HVAC Control Module

Front Passenger Door Module

Outside Rearview Mirror Driver

Outside Rearview Mirror Front Passenger

2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

Components on diagram:

Brake Pedal Position Sensor

Electro Hydraulic Power Steering Module

Steering Wheel Speed Position Sensor

2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

Components on diagram:

Clearance Lamp RR

Clearance Lamp RF

License Lamp Right

2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

Components on diagram:

Ignition Coils

Ignition Control Module

2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

Components on diagram:

Clutch Pedal Position Switch

Engine Control Module

Turn Signal/Multifunction Switch

2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

Components on diagram:

Body Control Module

Horn Left

Horn Right

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Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 2004 GMC Sierra 2500 HD vehicle.