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

Component Replacement & Adjustment -> Blazer, Jimmy, Sonoma & S10 -> Cooling System Bleed
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

  • Slowly fill cooling system with 50/50 suitable coolant and water mixture to 1/2 inch below radiator fill opening.
  • Start and run engine. As cooling system warms u...

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BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Disc Brakes -> Delco Single Piston Sliding Caliper -> Troubleshooting -> Brake Rattle -> Brake Roughness Or Chatter; Pedal Pumping -> Caliper Brake Fluid Leak -> Excessive Pedal Effort -> Excessive Pedal Travel -> Heavy Brake Drag -> No Braking Effect When Brake Pedal Is Depressed -> Pull, Uneven Or Grabbing Brakes -> Rear Brakes Locking On Application
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Excessive Pedal Travel

  • Worn brake linings.
  • Disc pads knock back after cornering or rough road travel.
  • Piston and linings not properly seated or positioned.
  • Insufficient fluid in system.
  • Loose wheel bearing adjustment.
  • Damaged or worn caliper piston seal.
  • Improper booster pushrod adjustment.
  • Pads out of flat more than .005 inch.
  • Rear brake automatic adjusters inoperative.
  • Improperly ground rear brake shoes.

Brake Roughness Or Chatter; Pedal Pumping

  • Excessive lateral runout of rotor.
  • Rotor excessively out of parallel.

Excessive Pedal Effort

  • Frozen or seized pistons.
  • Brake fluid, oil or grease on ...

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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 U-JOINT, Replace -> Assemble -> Disassemble
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

Never clamp propeller shaft tubing in a vise. Clamping could dent or deform the tube causing an imbalance or unsafe condition. Always clamp on one of the yokes and support the shaft horizontally. Avoid damaging the slip yoke sealing surface. Nicks may damage the bushing or cut the lip seal.

Disassemble

  • Support propeller shaft in a line horizontal with table of a press.
  • Mark propeller shaft in order to show which end connects to transmission and which end goes to rear axle.
  • On models equipped with external snap ring retainers, proceed as follows:
    • Disassemble snap rings by ...

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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 -> Traction Control System (TCS)/Electronic Stability Control (ESC) Warning Lamp ->
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If t...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

Inlet

  • Drain cooling system into a suitable container.
  • Reposition heater core inlet hose clamp at engine water outlet adapter pipe.
  • Remove hose from engine water outlet adapter pipe.
  • Reposition heater hose inlet clamp at heater core.
  • Remove heater inlet hose from heater core.
  • Remove hose from vehicle.
  • R...

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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

  • Remove belt tensioner pulley retaining bolt...

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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+.

Vehicle Speed Sensor Diagram for 2003 GMC Sonoma  4.3 V6 GASVehicle Speed Sensor Diagram for 2003 GMC Sonoma 4.3 V6 GAS

Components on diagram:
  • Vehicle Speed Sensor
  • Front Passenger Door Diagram for 2003 GMC Sonoma  4.3 V6 GASFront Passenger Door Diagram for 2003 GMC Sonoma 4.3 V6 GAS

    Components on diagram:
  • Door Speaker
  • Connector C-500
  • Connector C-501
  • Connector C-601
  • Grommet P-500
  • 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:
  • Sunroof Control Module
  • Overhead Console
  • Sunroof Motor
  • 2003 GMC Sonoma  4.3 V6 GAS Wiring Diagram2003 GMC Sonoma 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Inflatable Restraint Sensing and Diagnostic Module (SDM)
  • Inflatable Restraint I/P Module
  • Inflatable Restraint I/P Module Disable Switch
  • 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 2003 GMC Sonoma Door Handle, Rear, Driver Or Passenger Side2003 GMC Sonoma Door Handle, Rear, Driver Or Passenger Side, Without door lock hole; A high quality, OE replacement door handle; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $13.01

    Click here to view more details1995 GMC Sonoma Ignition Switch, Blade type; With 12-prong and 2-prong female terminals; A high quality, OE replacement ignition switch; With 2 years limited Trustbuilt warranty..

    Source: Auto Body Parts Store

    $66.75

    Click here to view more details2002 GMC Pickup Fullsize C/K Driver Side Front Lower Side Marker Light Lens And Housing, Driver Side Front Lower Side Marker Light Lens And Housing; With Dual Or Composite Head Lights, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $6.50

    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 details2000 GMC Sonoma Used Upper Control Arm, Passenger Side, 2.2, MANUAL, 4X2 R, 4x2, R., Very Good.

    Source: Used Auto Parts Store

    $62.00

    Click here to view more details1992 GMC Sonoma Used Rear Axle Assembly, 2.2, MANUAL, 4X2 4x2, Without 3rd shock; 4.10 ratio (opt GT5), Very Good.

    Source: Used Auto Parts Store

    $468.00
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