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Get Full Access 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 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:1
  • 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: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  8.1 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

Components on diagram:
  • Selectable Ride Switch
  • Shock Absorber Solenoid RR
  • Shock Absorber Solenoid RF
  • Shock Absorber Solenoid LR
  • Shock Absorber Solenoid LF
  • 2004 GMC Sierra 2500 HD  8.1 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

    Components on diagram:
  • Instrument Panel Cluster
  • Starter Solenoid
  • Generator
  • Powertrain Control Module
  • Battery Left
  • 2004 GMC Sierra 2500 HD  6.0 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Body Control Module
  • Fog Lamp LF
  • Multifunction Accessory Switch
  • 2004 GMC Sierra 2500 HD  6.6 V8 DIESEL Wiring Diagram2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Headlamp Leveling Switch
  • 2004 GMC Sierra 2500 HD  8.1 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 8.1 V8 GAS 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 Diagram2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

    Components on diagram:
  • Memory Seat Module
  • Driver Door Module
  • Heated Seat Element Driver Cushion
  • Memory Heated Seat Switch
  • 2004 GMC Sierra 2500 HD  8.1 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 8.1 V8 GAS Wiring Diagram

    Components on diagram:
  • Washer Fluid Level Sensor
  • Headlamp Low Beam Right
  • Park Turn Signal Lamp RF
  • Headlamp High Beam Right
  • Park Turn Signal Lamp LF
  • 2004 GMC Sierra 2500 HD  6.6 V8 DIESEL Wiring Diagram2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Transmission Control Module
  • Water In Fuel Sensor
  • Glow Plug Controller
  • Engine Control Module
  • Engine Oil Level Switch
  • 2004 GMC Sierra 2500 HD  6.6 V8 DIESEL Wiring Diagram2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

    Components on diagram:
  • Instrument Panel Cluster
  • Inflatable Restraint Sensing And Diagnostic Module
  • Seat Belt Switch Driver
  • 2004 GMC Sierra 2500 HD  6.0 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Radio
  • Digital Radio Receiver
  • CLICK HERE TO GET FULL ACCESS TO 2004 GMC Sierra 2500 HD WIRING DIAGRAMS!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details2010 GMC Sierra 2500 HD Headlight, Passenger Side, Bulbs included; Composite and combination type; DOT and SAE approved; A high quality, direct fit OE replacement headlight assembly; With 2 years limited TrustBuilt warranty..

    Source: Auto Body Parts Store

    $207.93

    Click here to view more details2009 GMC Sierra 2500 HD Oxygen Sensor, Driver Side, 6.69 in. wire length; Includes butt type connectors and easy-to-follow instructions; Without plug; Designed to fit screw-in type bungs; May not be compatible with flanges; May require minor modifications; Quality tested to ensure efficient fuel combustion; A high quality oxygen sensor; Features stainless steel shell, hex nut, shield, Teflon-covered insulated wires, high-temperature rubber internal and external seals, and threaded tube coated with anti-seize compound; Helps reduce harmful emissions; With 3 years limited CertifiedXL warranty..

    Source: Auto Body Parts Store

    $48.00

    Click here to view more details about 2012 GMC Terrain Chrome Mirror, Passenger Side2012 GMC Terrain Chrome Mirror, Passenger Side, PASSENGER SIDE CHROME MIRROR, POWER WITH HEAT AND MEMORY , , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $124.79

    Click here to view more details2002 GMC Sierra 2500 HD V8, 8.1 L, 496 CID Rebuilt Engine, Roller Vortec, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $3,265.00

    Click here to view more details2006 GMC Sierra 2500 HD Used Air Flow Meter/Sensor, DIESEL, Very Good.

    Source: Used Auto Parts Store

    $127.00

    Click here to view more details2008 GMC Sierra 2500 HD Used Engine Computer, Elec Cont Unit (ECU); (lower part of air cleaner box), 3.5L, Very Good.

    Source: Used Auto Parts Store

    $105.00
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