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

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!

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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

Component Replacement & Adjustment -> Blazer, Jimmy, Sonoma & S10 -> Heating, Ventilation & Air Condition (HVAC) Control Assembly, Replace
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

  • Remove Data Link Connector (DLC) mounting screws and feed DLC lines through sound insulator hole.
  • Remove mounting screws and lefthand instrument panel sound insulator.
  • Disconnect electrical connectors and remove remote control door lock receiver module.
  • Set park brake and block wheels.
  • Remove mounting screws and lower instrument panel sound insulator.
  • Disconnect accessory power outlet electrical connector.
  • Release park brake and remove brake release handle.
  • Remove courtesy lamp socket moun...

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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Disc Brakes -> Delco Dual Piston Sliding Caliper -> Brake System Bleed
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Refer to. "Hydraulic Brake... "

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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 1992-05 S/T Series Blazer, Bravada, Jimmy & Pickup -> Normal Service -> Severe Service
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

Normal Service

R...

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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 4.3 V6 GAS

  • Disconnect battery ground cable.
  • Remove air inlet duct.
  • Remove heater hose brace bolt from rear of alternator.
  • Disconnect alternator electrical connectors.
  • Remove accessory drive belt.
  • Remove alternator mou...

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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

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Lower

  • Drain cooling system into a suitable container.
  • 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

  • Drain cooling syst...

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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+.

Blower Motor Relay Diagram for 2003 GMC Sonoma  4.3 V6 GASBlower Motor Relay Diagram for 2003 GMC Sonoma 4.3 V6 GAS

Components on diagram:
  • Blower Motor Resistor
  • Blower Motor
  • Blower Motor Relay
  • Blower Motor Connector
  • Blower Motor Resistor Connector
  • Endgate,Rear Window Defogger Connector & Harness Diagram for 2003 GMC Sonoma  4.3 V6 GASEndgate,Rear Window Defogger Connector & Harness Diagram for 2003 GMC Sonoma 4.3 V6 GAS

    Components on diagram:
  • Connector C-432
  • Connector C-433
  • Endgate
  • Rear Window Defogger Connector
  • Rear Window Defogger Harness
  • 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:
  • Windshield Washer Motor
  • Multifunction Switch
  • Windshield Washer Fluid Pump
  • 2003 GMC Sonoma  2.2 L4 GAS Wiring Diagram2003 GMC Sonoma 2.2 L4 GAS Wiring Diagram

    Components on diagram:
  • Seat belt Indicator
  • Body Control Module (BCM)
  • Seat Belt Switch-LF
  • 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 2000 GMC Sonoma Fender, Front, Driver Side2000 GMC Sonoma Fender, Front, Driver Side.

    Source: Auto Body Parts Store

    $55.78

    Click here to view more details about 1997 GMC Sonoma Turn Signal Light, Passenger Side1997 GMC Sonoma Turn Signal Light, Passenger Side.

    Source: Auto Body Parts Store

    $15.46

    Click here to view more details about 2009 GMC Envoy Full Door Mirror Covers2009 GMC Envoy Full Door Mirror Covers, Full Door Mirror Covers; 2 Piece Set, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $46.50

    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 details1994 GMC Sonoma Used Air Cleaner Assembly, 4.3, AUTO, 4X4 6-262 (4.3L), CPI (VIN W), Very Good.

    Source: Used Auto Parts Store

    $72.00

    Click here to view more details1991 GMC Sonoma Used Rear Drive Shaft, 4x2, 108 WB, Very Good.

    Source: Used Auto Parts Store

    $122.00
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