Auto Parts Search
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!Select Section
- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1993 GMC G25/G2500 VAN AUTOMOBILES
Manual Air Conditioning & Heater System Diagnosis & Testing -> Light Duty Trucks & Vans -> HEATER SYSTEM DIAGNOSIS & TESTING -> ASTRO, SAFARI, C, G, K, P, S & T SERIES -> Heater Functional Check -> Heater Functional Test -> Insufficient Heater Or Defrosting -> Insufficient Heating Or Defrosting -> LUMINA APV & TRANS SPORT -> TRACKER
Vehicle: 1993 GMC G25/G2500 VAN Vandura 6.2 V8 DIESEL
ASTRO, SAFARI, C, G, K, P, S & T SERIES
Heater Functional Test
Before starting the functional test, the vehicle should be idling with coolant hot and thermostat open. Coolant temperature should be approximately 194°F.
- Cycle the temperature lever to the extreme ends of travel in control assembly to ensure cable is properly adjusted.
- Set mode lever to VENT position.
- Air equal in temperature to outside air should be discharged from the instrument panel outlets.
- Air should not blow from floor outlets, defroste...
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
Drum Brakes -> Brake Service -> C & K Series w/Non-Servo Brakes -> Duo-Servo Brakes -> Installation -> Lumina APV, Silhouette & Trans Sport -> Removal -> Tracker
Vehicle: 1993 GMC G25/G2500 VAN Rally 5.7 V8 GAS
Duo-Servo Brakes
Removal
- Raise and support vehicle, then remove tire and wheel assembly.
- Remove brake drum. If brake lining is dragging on brake drum, back off brake adjustment by rotating adjustment screw. Refer to individual truck chapter for procedure. If brake drum is rusted or corroded to axle flange and cannot be removed, lightly tap flange to drum mounting surface with a suitable hammer.
- Using brake spring pliers or equivalent, unhook primary and secondary return springs, Fig. . Observe location of brake parts being removed to aid during installation.
- Remove brake hold-down spri...
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 Filter Scheduled Maintenance -> 1988-95 C/K, G & R/V Series w/Gasoline Engine -> Heavy Duty Emissions -> Light Duty Emissions -> Normal Service -> Severe Service
Vehicle: 1993 GMC G25/G2500 VAN Rally 4.3 V6 GAS
Light Duty Emissions
Normal Service
Replace every 60,000 miles
Severe Service
Rep...
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, Replace -> One Piece Driveshaft -> Two Piece Driveshaft
Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 GAS
One Piece Driveshaft
- Raise and support vehicle.
- Mark rear universal joint to drive shaft flange.
- Remove retaining bolts and clamps.
- Remove propeller shaft from pinion drive flange.
- Remove propeller shaft from transmission/transfer case.
- Using tape or a rubber band, wrap the U-Joint bearing caps to ensure bearing caps do not separate from U-Joint.
- Reverse procedure to install, noting the following:
- Align reference marks made during removal.
- Torque yoke retainer bolts to 18 ft. lbs.
Two Piece Driveshaft
- Raise and support vehicle.
- Suppor...
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
Starter, Replace
Vehicle: 1993 GMC G25/G2500 VAN Rally 6.2 V8 DIESEL
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove starter to engine brace and heat shields, if equipped.
- Remove starter motor mounting bolts and lower ...
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 -> Check Engine/Service Engine Soon Indicator Lamp -> Diesel Electronic Control System
Vehicle: 1993 GMC G25/G2500 VAN Rally 6.2 V8 DIESEL
The Check Engine/Service Engine Soon Lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on after the engine is started, the self diagnosis system has detected a problem and has stored a code in the system Electronic Control Module (...
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
Radiator, Replace
Vehicle: 1993 GMC G25/G2500 VAN Rally 5.0 V8 GAS
- Drain coolant from radiator into a suitable container.
- Remove upper fan shroud bolts and upper fan shroud.
- Remove upper insulators and brackets.
- Remove upper and lower radiator hoses.
- Disconnect and plug transmission fluid cooler lines.
- Disconnect and plug engine oil cooler lines.
- Remove lower fan shroud r...
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 4.3 V6 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+.
Transmission Components Diagram for 1993 GMC G25/G2500 VAN Vandura 4.3 V6 GAS Components on diagram: |
Fuel Pump Relay & Cowl Wiring Diagram for 1993 GMC G25/G2500 VAN Vandura 4.3 V6 GAS Components on diagram: |
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 6.2 V8 DIESEL Wiring Diagram Components on diagram: |
1993 GMC G25/G2500 VAN Vandura 5.7 V8 GAS Wiring Diagram Components on diagram: |
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: |
Document: Air Conditioning Odor Vehicle: 1993 GMC G25/G2500 VAN Rally 4.3 V6 GAS Symptoms: |
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!
Shop online for auto body parts, engines, wheels, lights...
More parts |
Get the Complete Technical Service Bulletins! |
Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 1993 GMC G25/G2500 VAN vehicle. |
Access the Complete guide! |