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1993 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 1993 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 1993 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 1993 GMC Sonoma AUTOMOBILES

Cooling Fans -> Light Duty Trucks & Vans -> SYSTEM DIAGNOSIS & TESTING -> C, K, G & P SERIES -> LUMINA APV, SILHOUETTE & TRANS SPORT
Vehicle: 1993 GMC Sonoma 4.3 V6 GAS

LUMINA APV, SILHOUETTE & TRANS SPORT

Refer to Figs. through , for diagnosis and testing procedures, noting the following:

  • If fan blade is bent or dam...

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BRAKE SERVICE PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

Power Brake Units -> Delco-Moraine Brake Boosters -> General Service
Vehicle: 1993 GMC Sonoma 2.5 L4 GAS

Certain general service procedures apply, regardless of whether the brakes are vacuum or hydraulically assisted. Only top quality, clean brake fluid should be used. More seals and valves are used with power brake systems than with ordinary brakes, so an inferior brake fluid will do much more damage. For the same reason, be sure all dirt is kept out of the system. Additionally, on models with hydraulic assist brakes, care must be taken not to mix the fluids of the booster hydraulic system and brake hydraulic system as the fluids are not compatible.

If the power unit fails, the bra...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1993 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: 1993 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 ...

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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

CV AXLE SHAFT, Replace -> Install -> Remove
Vehicle: 1993 GMC Sonoma 2.5 L4 GAS

Remove

  • Disconnect battery ground cable.
  • Unlock steering column, then raise and support vehicle.
  • Remove wheel assembly, then axle nut and washer.
  • Support lower control arm, then remove lower shock absorber nut and bolt.
  • Scribe all revolving driveshaft components in relation to connecting component to ensure correct balance upon assembly.
  • Insert drift through opening in top of caliper into rotor cooler vanes to keep axle from turn...

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

Starter, Replace
Vehicle: 1993 GMC Sonoma 4.3 V6 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 outer bolt. If starter makes a high pitched whine after firing, add .015 inch double shims until noise ceases.

  • Disconnect battery ground cable.
  • Raise and support front of vehicle.
  • Raise vehicle half way to gain access to starter motor.
  • Re...

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MAINTENANCE LAMP RESET PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

General Motors Corp./Saturn Trucks -> Service Throttle Soon Indicator Lamp ->
Vehicle: 1993 GMC Sonoma 2.8 V6 GAS

A "Service Throttle Soon" indicator lamp is mounted in the lower righthand instrument cluster corner on these models. It lights when the ignition is turned On, but should go out approximately 1-5 seconds after the engine starts.

Traditional throttle cables are no longer used on these models. The PCM receives signals from an electron...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1993 GMC Sonoma 4.3 V6 GAS

Lower

  • Drain cooling system into a suitable container.
  • Reposition hose clamp from radiator.
  • Remove radiator outlet hose from radiator.
  • Reposition hose clamp from coolant pump inlet.
  • Remove radiator outlet hose from coolant pump inlet and from vehicle.
  • Reverse pro...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1993 GMC Sonoma AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1993 GMC Sonoma 4.3 V6 GAS

  • Remove belt tensioner pulley retaining bolt...

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COMPONENT LOCATION DIAGRAMS FOR 1993 GMC Sonoma AUTOMOBILES

Component location diagrams for most 1993 GMC Sonoma cars and light trucks sold in the U.S. from 1990+.

4WD Axle Actuator Diagram for 1993 GMC Sonoma  2.8 V6 GAS4WD Axle Actuator Diagram for 1993 GMC Sonoma 2.8 V6 GAS

Components on diagram:
  • Transfer Case Relay
  • Front Axle Actuator
  • Front Axle Solenoid Switch
  • Splice S-112
  • Fog Lamp Relay Diagram for 1993 GMC Sonoma  2.5 L4 GASFog Lamp Relay Diagram for 1993 GMC Sonoma 2.5 L4 GAS

    Components on diagram:
  • Convenience Center
  • Fog Lamp Relay
  • Fog Lamp Switch
  • Connector C-183
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC Sonoma PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1993 GMC Sonoma AUTOMOBILES

    OEM drawn wiring diagrams for most 1993 GMC Sonoma cars and light trucks sold in the U.S.

    1993 GMC Sonoma  2.5 L4 GAS Wiring Diagram1993 GMC Sonoma 2.5 L4 GAS Wiring Diagram

    Components on diagram:
  • A/C Compressor Clutch Relay
  • Heater And A/C Control Assembly
  • A/C Compressor Clutch
  • A/C High Pressure Cutout Switch
  • Engine Control Module
  • 1993 GMC Sonoma  2.5 L4 GAS Wiring Diagram1993 GMC Sonoma 2.5 L4 GAS Wiring Diagram

    Components on diagram:
  • Instrument Cluster
  • Engine Control Module
  • Data Link Connector (DLC)
  • Indicator Service Engine
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC Sonoma WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1993 GMC Sonoma AUTOMOBILES

    OEM TSB listings for most 1993 GMC Sonoma cars and light trucks sold in the U.S. from 1985+.

    Document: Car and Truck Fix It Right the First Time Issues
    Vehicle: 1993 GMC Sonoma 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: Air Conditioning Odor
    Vehicle: 1993 GMC Sonoma 4.3 V6 GAS

    Symptoms:
  • Odors
  • Auto Systems:
  • Heating, A/C, Ventilation, Defogger
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC Sonoma TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1993 GMC Sonoma AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1993 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 1993 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 1993 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 1993 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 1993 GMC Sonoma SPECIFICATIONS DATA!

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