2003 GMC Sonoma REPAIR MANUAL -- HOW TO FIX YOUR CAR OR TRUCK

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2003 GMC Sonoma CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 GMC Sonoma 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 GMC Sonoma automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for GMC mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 2003 GMC Sonoma vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Domestic Vehicles
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Drum Brakes -> Inspection -> Adjuster Mechanism -> Backing Plate -> Brake Drums -> Brake Linings & Springs -> General System -> Parking Brake Cable
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

General System

  • Inspect components for damage or unusual wear. Replace as required.
  • Inspect backing plate mounting bolts and ensure they are tight.
  • Inspect wheel cylinders. Excessive fluid indicates cup leakage and need for wheel cylinder replacement. Slight amount of fluid is always present and is considered normal, acting as lubricant for cylinder pistons.
  • Inspect adjuster screw operation. If satisfactory, lightly lubricate adjusting screw and washer with suitable brake lube. If operation is unsatisfactory, replace.
  • Clean rust and dirt from shoe contact surfaces on backing plate using fi...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Pressure Relief -> Except Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Tracker & Uplander -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.

Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.

After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strategy.

Engines Less Fuel Pressure ...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

DRIVESHAFT, Replace -> Front -> One Piece Driveshaft -> Rear -> Two Piece Driveshaft
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Front

  • Raise and support vehicle.
  • Mark the front U-joint to the pinion yoke on the front differential.
  • Mark the relationship of the rear U-joint to the transfer case drive flange.
  • Remove the retaining nuts and bolts from the drive flange.
  • Remove the clamps and retaining bolts from the front drive axle pinion flange.
  • Remove the front propeller shaft from the vehicle.
  • Using tape and or a rubber band, wrap the front U-joint bearing caps to ensure the caps do not separate from the U-joint.
  • Reverse procedure to install, noting the following:
    • Torque front propeller shaft to the pinion flang...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Alternator, Replace
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

  • Disconnect battery ground cable.
  • Remove left front wheel and tire assembly.
  • Working through wheelwell, remove alternator rear brace mounting bolts, then brace.
  • Disconnect battery ground cable.
  • Remove accessory drive belt.
  • Disconnect alternator electrical con...

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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

General Motors Corp./Saturn Trucks -> Reduce Engine Power Indicator Lamp ->
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

The Reduce Engine Power indicator lamp should light for a approximately 3 seconds when the ignition is turned On as a bulb check. If the warning lamp turns On during vehicle operation, a vehicl...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Inlet

  • Drain cooling system into a suitable container.
  • Reposition heater core inlet hose clamp at intake manifold fitting.
  • Remove hose from intake manifold fitting.
  • Reposition heater hose inlet clamp at heater core.
  • Remove heater inlet hose from heater core.
  • Remove hose from vehicle.
  • Reverse pr...

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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

  • Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from dr...

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COMPONENT LOCATION DIAGRAMS FOR 2003 GMC Sonoma AUTOMOBILES

Component location diagrams for most 2003 GMC Sonoma cars and light trucks sold in the U.S. from 1990+.

Inflatable Restraint I/P Module Switch Connector Diagram for 2003 GMC Sonoma  4.3 V6 GASInflatable Restraint I/P Module Switch Connector Diagram for 2003 GMC Sonoma 4.3 V6 GAS

Components on diagram:
  • Sunload Temperature Sensor
  • I/P Compartment Lamp
  • Speaker
  • Courtesy Lamp
  • Door Jamb Switch
  • License Lamp Bulb,License Lamp Diagram for 2003 GMC Sonoma  4.3 V6 GASLicense Lamp Bulb,License Lamp Diagram for 2003 GMC Sonoma 4.3 V6 GAS

    Components on diagram:
  • License Lamp
  • License Lamp Bulb
  • CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 2003 GMC Sonoma AUTOMOBILES

    OEM drawn wiring diagrams for most 2003 GMC Sonoma cars and light trucks sold in the U.S.

    2003 GMC Sonoma  2.2 L4 GAS Wiring Diagram2003 GMC Sonoma 2.2 L4 GAS Wiring Diagram

    Components on diagram:
  • Body Control Module
  • Gate Ajar Indicator
  • Rear Window Wiper Cutout and Liftglass Ajar Jamb Switch
  • 2003 GMC Sonoma  4.3 V6 GAS Wiring Diagram2003 GMC Sonoma 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Stop Lamp Switch
  • Park/Neutral Position (PNP) Switch
  • Automatic Transmission Shift Lock Actuator
  • CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 2003 GMC Sonoma AUTOMOBILES

    OEM TSB listings for most 2003 GMC Sonoma cars and light trucks sold in the U.S. from 1985+.

    Document: Revised General Motors New Vehicle Tire Warranty Program
    Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • Document: New Website for AFIT, TPM, and VDR Updates
    Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 2003 GMC Sonoma AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 GMC Sonoma cars and light trucks sold in the U.S. and Canada from 1970+.

    • Brake caliper mounting bolt torque
    • Brake drum runout, machining, & discard specs
    • Minimum brake lining thickness.
    • Brake rotor runout, parallelism, machining, discard, & finish specs

    A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 2003 GMC Sonoma cars and light trucks sold in the U.S. and Canada from 1980+.

    • Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap

    COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.

    PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules

    QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 2003 GMC Sonoma cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.

    • Automatic transmission/transaxles capacities, lubricant recommendations
    • Differential/final drive capacities, lube recommendations, grades, & viscosities
    • Final drive fill & drain plug torques
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
    • Number of lubrication fittings & plugs
    • Power steering, brake, & clutch fluid recommendations
    • Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
    • Severe service maintenance & interval recommendations
    • Tire sizes, wheel nut/bolt torque, pressures & rim sizes
    • Transfer case capacities, lube recommendations, grades, & viscosities

    TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 2003 GMC Sonoma cars and light trucks sold in the U.S. and Canada from 1980+

    • Airflow sensor electrical specifications
    • Tensioning specifications for systems with automatic tensioners
    • Barometric pressure sensor specs
    • Battery group number and cranking performance
    • Crankshaft & camshaft position sensor resistance
    • Engine compression pressures
    • Coolant temperature sensor specs
    • Computer advance.
    • Diesel fuel temperature sensor resistance.
    • Distributor advance specifications
    • Ignition pickup coil resistance
    • Exhaust gas recirculation temperature sensor resistance
    • Engine fastener torque values
    • Firing order diagrams
    • Fuel system pressures
    • Generator (alternator) specs
    • Intake air temperature sensor specs
    • Ignition coil specifications
    • Fuel injector resistance
    • Engine idle speeds
    • Knock sensor resistance
    • Manifold absolute pressure sensor specs
    • Mixture control solenoid resistance
    • Voltage regulator specs
    • Spark plug applications & gaps
    • Starter motor electrical specs.
    • Tensioning specifications for systems without automatic tensioners
    • Throttle body temperature sensor resistance
    • Ignition timing in degrees at rpm
    • Transmission oil temperature sensor resistance
    • Throttle position sensor specs
    • Vacuum sensor valve specs

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma SPECIFICATIONS DATA!

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

    Click here to view more details about 2004 GMC Sonoma Third Brake Light2004 GMC Sonoma Third Brake Light, With clear lens; FMVSS-108 compliant; DOT and SAE approved; A high quality, direct fit OE replacement third brake light..

    Source: Auto Body Parts Store

    $17.53

    Click here to view more details2003 GMC Sonoma 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 details2015 GMC Pickup Sierra 3500 20" x 8.5" Alloy Wheel Take Off, Alloy Wheel Take Off; 20 X 8.5; 10 Spokes; 8 Lug; 180MM BP; Used; OEM Chrome, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $347.50

    Click here to view more details about 2004 GMC Sonoma V6, 4.3 L, 260 CID Rebuilt Engine2004 GMC Sonoma V6, 4.3 L, 260 CID Rebuilt Engine, Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,451.00

    Click here to view more details1996 GMC Sonoma Used Ignition Switch W/Key, Automatic Transmission, conventional, w, key, Very Good.

    Source: Used Auto Parts Store

    $69.00

    Click here to view more details2001 GMC Sonoma Used A/C Compressor, 4.3, AUTO, 4X4, Very Good.

    Source: Used Auto Parts Store

    $103.00
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