Auto Parts Search


      Over 40 million used auto parts online. Shop online for auto and truck parts and save up to 75%

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!
Help me findSearch
Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 GMC Sierra 1500 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 automobile. Try the Automotix DIY solution today!
DIY REPAIR SAMPLES > CONTINUE EXPLORING >

We have info for following modifications of 2003 GMC Sierra 1500

  • 2003 GMC Sierra 1500 4.3 V6 GAS, CID:262, Fuel Injection, Aspiration:262, Engine VIN:, Desg:X
  • 2003 GMC Sierra 1500 4.8 V8 GAS, CID:294, Fuel Injection, Aspiration:294, Engine VIN:, Desg:V
  • 2003 GMC Sierra 1500 5.3 V8 GAS, CID:323, Fuel Injection, Aspiration:323, Engine VIN:, Desg:T
  • 2003 GMC Sierra 1500 5.3 V8 FLEX, CID:323, Fuel Injection, Aspiration:323, Engine VIN:, Desg:Z

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Radiator, Replace
Vehicle: 2003 GMC Sierra 1500 4.8 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 RADIATOR & HOSE REPLACEMENT PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Radiator, Replace
Vehicle: 2003 GMC Sierra 1500 5.3 V8 FLEX

  • 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 RADIATOR & HOSE REPLACEMENT PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sierra 1500 4.8 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 RADIATOR & HOSE REPLACEMENT PROCEDURES

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 GMC Sierra 1500 4.3 V6 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 positive crankcase ventilation (PCV) hose from air cleaner outlet duct.
  • Remove air inlet tube and resonator retaining wing nut.
  • Remove air inlet tube and resonator from throttle body by pivoting air inlet tube and resonator upward until hinge clip releases from lip on throttle body.
  • Reposition radiator outlet hose clamp at radiator.
  • Remove radiator outlet hose from radiator.
  • Reposition radiator outlet ...

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

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sierra 1500 4.3 V6 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 heater core.
  • R...

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

RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sierra 1500 AUTOMOBILES

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

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sierra 1500 5.3 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 RADIATOR & HOSE REPLACEMENT PROCEDURES

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

Click here to view more details2007 GMC Sierra 1500 Tail Light, Driver Side.

Source: Auto Body Parts Store

$98.39

Click here to view more details2003 GMC Sierra 1500 Neutral Safety Switch, Blade type; 4-prong and 7-prong male terminals; A high quality, direct fit OE replacement neutral safety switch; With 2 years limited Trustbuilt warranty..

Source: Auto Body Parts Store

$37.58

Click here to view more details about 2012 GMC Acadia Halogen Head Light Assembly, Passenger Side2012 GMC Acadia Halogen Head Light Assembly, Passenger Side, PASSENGER SIDE HALOGEN HEAD LIGHT ASSEMBLY, 2008 2ND OE DESIGN WITH CLEAR LENS, , .

Source: Wheels / Rims, Mirrors & Lights Store

$277.55

Click here to view more details2002 GMC Sierra 1500 XC V8, 5.3 L, 325 CID Rebuilt Engine, 5.3 CHEVY,GMC, Warranty: 3-Year/100,000 Mile, .

Source: Rebuilt Engines Store

$1,866.00

Click here to view more details2003 GMC Sierra 1500 Used A/C Compressor, 5.3, AUTO, 4X2, Very Good.

Source: Used Auto Parts Store

$125.00

Click here to view more details2009 GMC Sierra 1500 Used Radio, AM-mono-FM-stereo-ETR (opt UM7), Very Good.

Source: Used Auto Parts Store

$108.00
More parts
Help me findSearch
Auto Repair Quick Search
Help me find
Search DIY repair manuals by VIN...
Vehicle Identification Number is a unique serial number used by the automotive industry to identify individual motor vehicles

Find out what info we have for your vehicle

Get the Complete Technical Service Bulletins!
Get the Complete Technical Service Bulletins!Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 2003 GMC Sierra 1500 vehicle.
Access the Complete guide!
Need To Fix Your Car or Truck?
Save Money With Free Car Insurance Quote
FREE car insurance quote
Enter Zip Code:
GOT A WEBSITE?Make money with Automotix

Make money with Automotix Partner Program.

Learn more

Auto Repair Quick Search
Help me find