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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  6.6 V8 DIESEL Wiring Diagram2004 GMC Sierra 2500 HD 6.6 V8 DIESEL Wiring Diagram

Components on diagram:
  • Blower Motor Resistor Assembly
  • Blower Motor
  • HVAC Control Module
  • 2004 GMC Sierra 2500 HD  6.0 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Rear Wheel Steering Control Module
  • 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
  • Engine Control Module
  • Battery Left
  • Battery Right
  • Generator Auxiliary
  • 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
  • Stoplamp Switch
  • 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
  • Horn Left
  • Horn Right
  • 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 Switch
  • Body Control Module
  • Ambient Light Sensor
  • Turn Signal Multifunction 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:
  • 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:
  • Electrical Symbols
  • 2004 GMC Sierra 2500 HD  6.0 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Digital Radio Receiver
  • 2004 GMC Sierra 2500 HD  6.0 V8 GAS Wiring Diagram2004 GMC Sierra 2500 HD 6.0 V8 GAS Wiring Diagram

    Components on diagram:
  • Cigar Lighter
  • Auxiliary Power Outlet Front
  • Auxiliary Power Outlet Console
  • 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 details2001 GMC Sierra 2500 HD Turn Signal Switch, Front, Also controls high and low beam dimmer, hazard warning, windshield washer fluid, and wipers; A high quality, OE replacement turn signal switch; With 2 years limited TrustBuilt warranty..

    Source: Auto Body Parts Store

    $319.23

    Click here to view more details about 2009 GMC Sierra 2500 HD Tail Light, Driver Side2009 GMC Sierra 2500 HD Tail Light, Driver Side.

    Source: Auto Body Parts Store

    $76.91

    Click here to view more details1977 GMC Sprint Radiator, Radiator; 1-Row; 20-3/4 X 17 X 1-1/4, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $141.50

    Click here to view more details2005 GMC Sierra 2500 HD V8, 6.0 L, 368 CID Rebuilt Engine, 6.0 V-8 Aluminum Heads, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $2,099.00

    Click here to view more details2011 GMC Sierra 2500 HD Used Upper Control Arm, Passenger Side, 6.6, AUTO, 4X4 UNKNOWN, Very Good.

    Source: Used Auto Parts Store

    $86.00

    Click here to view more details2001 GMC Sierra 2500 HD Used Fan Clutch, 4.3, AUTO, 4X2 ID BF, Very Good.

    Source: Used Auto Parts Store

    $66.00
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