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1993 GMC G25/G2500 VAN 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 G25/G2500 VAN 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 G25/G2500 VAN 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 1993 GMC G25/G2500 VAN 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 G25/G2500 VAN AUTOMOBILES

    Cooling System Capacities -> General Motors Corp./Saturn Light Trucks & Vans -> 1992-2002 Chevrolet & GMC Express/Van, G-Series & Savana
    Vehicle: 1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS

    [[table data]]

    CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN A/C & HEATER SERVICE PROCEDURES

    BRAKE SERVICE PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    Disc Brakes -> Delco-Moraine Single Piston Caliper -> Caliper Service -> Assemble -> Disassemble -> Inspection -> Installation -> Removal
    Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 GAS

    Removal

    • Siphon enough brake fluid out of the master cylinder to bring fluid level to 1/3 full to avoid fluid overflow when the caliper piston is pushed back into its bore.
    • Raise and support vehicle, remove front wheels.
    • Using a C-clamp, Fig. , push piston back into its bore.
    • Remove two mounting bolts and lift caliper away from disc.

    Inspection

    Should it become necessary to remove the caliper for installation of new parts, clean all parts in denatured alcohol, wipe dry using lint-free cloths. Using compressed air, blow out drilled passages and holes. Check dust boots for punctures or t...

    CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN BRAKE SERVICE PROCEDURES

    FUEL FILTER REPLACEMENT PROCEDURES FOR 1993 GMC G25/G2500 VAN 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 G25/G2500 VAN Rally 6.2 V8 DIESEL

    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 1993 GMC G25/G2500 VAN FUEL FILTER REPLACEMENT PROCEDURES

    DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    DRIVESHAFT U-JOINT, Replace -> Assemble -> Disassemble
    Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 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 1993 GMC G25/G2500 VAN DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES

    STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    Alternator, Replace
    Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 GAS

    • Disconnect battery ground cable.
    • Disconnect terminal plug and battery lead from rear of alternator.
    • Remove accessory drive belt.
    • Remove alternator mounting bolts.
    • Separate alternator from mount...

    CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN STARTER & ALTERNATOR REPLACEMENT PROCEDURES

    MAINTENANCE LAMP RESET PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    General Motors Corp./Saturn Trucks -> StabiliTrak Control System Warning Lamp ->
    Vehicle: 1993 GMC G25/G2500 VAN Vandura 5.7 V8 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 1993 GMC G25/G2500 VAN MAINTENANCE LAMP RESET PROCEDURES

    RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    Coolant Hose, Replace -> Lower -> Upper
    Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 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.
    • Remove radiator outlet hose from coolant pump and from vehicle.
    • Reverse procedure...

    CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN RADIATOR & HOSE REPLACEMENT PROCEDURES

    SERPENTINE BELT SERVICE PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    Serpentine Drive Belt, Replace
    Vehicle: 1993 GMC G25/G2500 VAN Vandura 5.0 V8 GAS

    • Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...

    CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN SERPENTINE BELT SERVICE PROCEDURES

    COMPONENT LOCATION DIAGRAMS FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    Component location diagrams for most 1993 GMC G25/G2500 VAN cars and light trucks sold in the U.S. from 1990+.

    Fuel Pump Relay & Cowl Wiring Diagram for 1993 GMC G25/G2500 VAN Rally 5.7 V8 GASFuel Pump Relay & Cowl Wiring Diagram for 1993 GMC G25/G2500 VAN Rally 5.7 V8 GAS

    Components on diagram:
  • Fuel Pump Prime Connector
  • Fuel Pump Relay
  • Auxiliary Cooling Fan Relay
  • Connector C-100
  • Connector C-122
  • Engine Wiring to Shipping Panel Diagram for 1993 GMC G25/G2500 VAN Rally 6.2 V8 DIESELEngine Wiring to Shipping Panel Diagram for 1993 GMC G25/G2500 VAN Rally 6.2 V8 DIESEL

    Components on diagram:
  • Fuel Pump Relay
  • PCM
  • Connector C-100
  • Connector C-201
  • Connector C-250
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    OEM drawn wiring diagrams for most 1993 GMC G25/G2500 VAN cars and light trucks sold in the U.S.

    1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS Wiring Diagram1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS Wiring Diagram

    Components on diagram:
  • LH Side Marker Lamp
  • RH Side Marker Lamp
  • Hazard Flasher
  • Stoplamp Switch
  • LH Park And Turn Signal Lamp
  • 1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS Wiring Diagram1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS Wiring Diagram

    Components on diagram:
  • LH Side Marker Lamp
  • RH Side Marker Lamp
  • Turn Signal Flasher
  • LH Park And Turn Signal Lamp
  • RH Park and Turn Signal Lamp
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    OEM TSB listings for most 1993 GMC G25/G2500 VAN 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 G25/G2500 VAN Rally 4.3 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: Air Conditioning Odor
    Vehicle: 1993 GMC G25/G2500 VAN Rally 4.3 V6 GAS

    Symptoms:
  • Odors
  • Auto Systems:
  • Heating, A/C, Ventilation, Defogger
  • CLICK HERE TO GET FULL ACCESS TO 1993 GMC G25/G2500 VAN TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1993 GMC G25/G2500 VAN AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1993 GMC G25/G2500 VAN 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 G25/G2500 VAN 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 G25/G2500 VAN 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 G25/G2500 VAN 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 G25/G2500 VAN SPECIFICATIONS DATA!

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    Click here to view more details about 1970 GMC G25/G2500 Van Glass Seal1970 GMC G25/G2500 Van Glass Seal, Does not accept trim; A high quality, direct fit OE replacement windshield seal..

    Source: Auto Body Parts Store

    $55.01

    Click here to view more details about 1974 GMC G25/G2500 Van Windshield Hardware, Rear1974 GMC G25/G2500 Van Windshield Hardware, Rear, With joint clamp; A high quality, direct fit OE replacement windshield molding lockstrip..

    Source: Auto Body Parts Store

    $26.29

    Click here to view more details2001 GMC Fullsize C/K Pickup After Market Center Cap, AFTER MARKET CENTER CAP, 4 PIECE SET, CONSTRUCTED OF DURABLE ABS PLASTIC TRIPLE CHROME PLATED, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $24.45

    Click here to view more details about 1979 GMC G25/G2500 Van Vandura V8, 5.7 L, 350 CID Rebuilt Engine1979 GMC G25/G2500 Van Vandura V8, 5.7 L, 350 CID Rebuilt Engine, Six bolt holes on exhaust side of head, 4-bolt main., Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

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    Click here to view more details1992 GMC G25/G2500 VAN Used Engine Computer, RG, ID 16146299, Very Good.

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    $141.00

    Click here to view more details1994 GMC G25/G2500 VAN Used Air Cleaner Assembly, 4.3, AUTO, RWD 4.3L, Very Good.

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