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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 GMC Sierra 1500 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 2003 GMC Sierra 1500 HD automobile. Try the Automotix DIY solution today!
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 HD AUTOMOBILES

Includes radiator, cooling and heater hose replacement procedures for domestic and imported 2003 GMC Sierra 1500 HD cars and light trucks from 1990+

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 GMC Sierra 1500 HD 6.0 V8 GAS

Lower

  • Drain cooling system into a suitable container.
  • Separate mass airflow (MAF)/intake air temperature (IAT) sensor assembly and air inlet tube by loosening hose clamp.
  • Disconnect radiator inlet hose clip from air cleaner outlet duct.
  • Remove air cleaner outlet duct.
  • Reposition radiator outlet hose clamp at radiator.
  • Remove radiator outlet hose from radiator.
  • Reposition hose clamp from water pump.
  • Remove radiator outlet hose from water pump and from vehicle.
  • Reverse procedure to install.

Upper

  • D...

CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 1500 HD RADIATOR & HOSE REPLACEMENT PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 HD AUTOMOBILES

Includes radiator, cooling and heater hose replacement procedures for domestic and imported 2003 GMC Sierra 1500 HD cars and light trucks from 1990+

Radiator, Replace
Vehicle: 2003 GMC Sierra 1500 HD 6.0 V8 GAS

  • Drain radiator coolant into suitable container.
  • Remove upper and lower radiator hoses.
  • Remove mounting bolts and lower fan shroud.
  • Remove engine vent hose and surge take hose.
  • Disconnect engine oi...

CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 1500 HD RADIATOR & HOSE REPLACEMENT PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 HD AUTOMOBILES

Includes radiator, cooling and heater hose replacement procedures for domestic and imported 2003 GMC Sierra 1500 HD cars and light trucks from 1990+

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sierra 1500 HD 6.0 V8 GAS

Inlet

  • Drain cooling system into a suitable container.
  • Remove air intake tube.
  • Remove heater and surge tank hose from mounting clip.
  • Reposition heater core inlet hose clamp at engine coolant inlet fitting.
  • Remove hose from engine coolant inlet fitting.
  • Reposition heater hose inlet clamp at heater core.
  • Remove heater inlet hose from ...

CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 1500 HD RADIATOR & HOSE REPLACEMENT PROCEDURES

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

Click here to view more details about 2007 GMC Sierra 1500 HD Bumper Bracket, Front, Passenger Side2007 GMC Sierra 1500 HD Bumper Bracket, Front, Passenger Side, A high quality, OE replacement bumper bracket; Backed by 1-year, unlimited-mileage warranty..

Source: Auto Body Parts Store

$14.02

Click here to view more details2006 GMC Sierra 1500 HD Bumper Bracket, Front, AutoTrust Gold products are guaranteed to meet or exceed the original manufacturer's standards and quality; <b>Backed by a 5-year limited warranty</b>; If the part breaks or is damaged - even if you are involved in a wreck or accident - anytime within 5 years from purchase, simply cover shipping and handling and we will send you a new part..

Source: Auto Body Parts Store

$81.63

Click here to view more details about 1996 GMC Van Fullsize Door Mirror Driver Side1996 GMC Van Fullsize Door Mirror Driver Side, Driver Or Passenger Side Manual Door Mirror; Below Eyeline Type; Stainless Steel, , .

Source: Wheels / Rims, Mirrors & Lights Store

$62.50

Click here to view more details2003 GMC Sierra 1500 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 details2007 GMC Sierra 1500 HD Used Wiper Motor Front, assm plant opt ARL, CMD, FWI, JAN or MSL, Very Good.

Source: Used Auto Parts Store

$86.00

Click here to view more details2001 GMC Sierra 1500 HD Used A/C Compressor, 5.3, AUTO, RWD, Very Good.

Source: Used Auto Parts Store

$103.00
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