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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!
    DIY REPAIR SAMPLES > CONTINUE EXPLORING >
    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

    Manual Air Conditioning & Heater System Diagnosis & Testing -> Blazer, Jimmy, Sonoma & S10 -> Heater Troubleshooting
    Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

    Refer to "Diagnostic ... "

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

    Drum Brakes -> Precautions
    Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

    When working on or around brake assemblies, care must be taken to prevent breathing asbestos dust, as many manufacturers incorporate asbestos fibers in the production of brake linings. During routine service operations, the amount of asbestos dust from brake lining wear is at a low level because of a chemical breakdown during use and a few precautions will minimize exposure.. Do not sand or grind brake linings unless suitable local exhaust ventilation equipment is used to prevent excessiv...

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma BRAKE SERVICE PROCEDURES

    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 4.3 V6 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 ...

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma FUEL FILTER REPLACEMENT PROCEDURES

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

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
    Vehicle: 2003 GMC Sonoma 2.2 L4 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 ...

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

    Starter, Replace
    Vehicle: 2003 GMC Sonoma 2.2 L4 GAS

    Upon removal of starter, note if any shims are used. If shims are used, they should be installed in their original locations. After installation, if starter is noisy during cranking, remove one .015 inch double shim or add one .015 inch single shim to the outer bolt. If starter makes a high pitched whine after firing, add .015 inch double shims until noise ceases.

    • Disconne...

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 2003 GMC Sonoma AUTOMOBILES

    General Motors Corp./Saturn Trucks -> StabiliTrak Control System Warning Lamp ->
    Vehicle: 2003 GMC Sonoma 4.3 V6 GAS

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

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma MAINTENANCE LAMP RESET PROCEDURES

    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...

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

    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...

    CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sonoma SERPENTINE BELT SERVICE PROCEDURES

    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+.

    Horn Switch,Inflatable Restraint Steering Wheel Module/Horn Pad Diagram for 2003 GMC Sonoma  4.3 V6 GASHorn Switch,Inflatable Restraint Steering Wheel Module/Horn Pad Diagram for 2003 GMC Sonoma 4.3 V6 GAS

    Components on diagram:
  • Horn Switch
  • Horn Switch Wires
  • Inflatable Restraint Steering Wheel Module/Horn Pad
  • Sunroof Switch Diagram for 2003 GMC Sonoma  4.3 V6 GASSunroof Switch Diagram for 2003 GMC Sonoma 4.3 V6 GAS

    Components on diagram:
  • Dome Lamp Wiring Harness
  • Sunroof Switch Connector
  • Sunroof Connector
  • 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  4.3 V6 GAS Wiring Diagram2003 GMC Sonoma 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Window Switch-Rr
  • Window Switch-LR
  • Window Motor-RR
  • Window Motor-LR
  • 2003 GMC Sonoma  4.3 V6 GAS Wiring Diagram2003 GMC Sonoma 4.3 V6 GAS Wiring Diagram

    Components on diagram:
  • Door Lock and Window Switch-Driver
  • Door Lock and Window Switch-Front Passenger
  • 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 1997 GMC Sonoma Headlight, Passenger Side1997 GMC Sonoma Headlight, Passenger Side, Bulbs included; With side marker; Composite and combination type; DOT and SAE approved; A high quality, OE replacement headlight assembly; Backed by 1-year, unlimited-mileage warranty..

    Source: Auto Body Parts Store

    $41.58

    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 details2006 GMC Yukon Standard Tail Light Bezel, STANDARD TAIL LIGHT BEZEL, 2 PIECE SET , , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $48.45

    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: 7-Year/70,000 Mile, .

    Source: Rebuilt Engines Store

    $1,451.00

    Click here to view more details1995 GMC Sonoma Used Distributor, 4.3, AUTO, 172K, 4X4 (6-262, 4.3L), side mtd spark plug wires, Very Good.

    Source: Used Auto Parts Store

    $108.00

    Click here to view more details2003 GMC Sonoma Used Rear Vent Window, Passenger Side, R., Very Good.

    Source: Used Auto Parts Store

    $96.00
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