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1994 GMC C2500 Suburban CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT GMC REPAIR SHOPS DON'T WANT YOU TO KNOW
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- 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 1994 GMC C2500 Suburban AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
Vehicle: 1994 GMC C2500 Suburban 5.7 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
Anti-lock Brakes -> Four Wheel Anti-Lock Brake System -> Precautions -> General Service Precautions
Vehicle: 1994 GMC C2500 Suburban 7.4 V8 GAS
General Service Precautions
Avoid contact with brake fluid when servicing the anti-lock brake syste...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Replacement -> Gasoline Engines Except Equinox, Montana SV6, Relay, Rendezvous w/3.6L Engine, Terraza, Uplander & Vue (2004-06) & 2004-06 Envoy, Rainier & TrailBlazer -> Returnless Fuel System
Vehicle: 1994 GMC C2500 Suburban 5.7 V8 GAS
Returnless Fuel System
On models equipped with fuel injected engines, relieve fuel system pressure as outlined under "Fuel System Pressure Relief."
On models equipped with metal collar quick disconnect connectors, GM tool No. J37088-A, or equivalent, will be required to disconnect the connector. Pri...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
DRIVESHAFT, Replace -> Front -> Front, All Except NP8 Axle -> Front, NP8 Axle -> One Piece Driveshaft -> Rear -> Three Piece Driveshaft -> Two Piece Driveshaft
Vehicle: 1994 GMC C2500 Suburban 5.7 V8 GAS
Front
Front, All Except NP8 Axle
- Raise and support vehicle.
- Remove front differential carrier shield, if used.
- Reference mark relationship of propeller shaft to front axle and transfer case flange.
- Remove bolts and retainers from front axle.
- Remove bolts and retainers from transfer case.
- Remove propeller shaft. When removing propeller shaft, do not attempt to remove shaft by pounding on yoke ears or using a tool between yoke and universal joint. If propeller shaft is removed by using such means, injection joints may fracture and lead to premature failure of joint.
- Compress propeller...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
Starter, Replace
Vehicle: 1994 GMC C2500 Suburban 7.4 V8 GAS
- Disconnect battery ground cable.
- Remove starter braces or heat shields, if equipped.
- Disconnect starter solenoid electrical connectors.
- Raise and support vehicle.
- Remove attaching bolts, nuts and washers from starter mot...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
General Motors Corp./Saturn Trucks -> StabiliTrak Control System Warning Lamp ->
Vehicle: 1994 GMC C2500 Suburban 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...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1994 GMC C2500 Suburban 6.5 V8 DIESEL
Inlet
- Remove air cleaner.
- Drain cooling system into a suitable container.
- Remove heater hose support clamp bolt.
- Reposition heater core inlet hose clamp at engine.
- Remove hose from engine.
- Reposition heater hose inlet clamp at heater core.
- Remove heater inlet hose from heater core.
- Remove hose from vehicle.
- Reverse procedure to in...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1994 GMC C2500 Suburban AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1994 GMC C2500 Suburban 6.5 V8 DIESEL
- Rotate tensioner to release belt tension, using a 1/2 inch breaker bar with a 5/8 inch socket placed on tensioner pulley.
- Remove drive belt.
- Route b...
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COMPONENT LOCATION DIAGRAMS FOR 1994 GMC C2500 Suburban AUTOMOBILES
Component location diagrams for most 1994 GMC C2500 Suburban cars and light trucks sold in the U.S. from 1990+.
HD Transmission Components Diagram for 1994 GMC C2500 Suburban 7.4 V8 GAS Components on diagram: |
Cruise Control Wiring Diagram for 1994 GMC C2500 Suburban 6.5 V8 DIESEL Components on diagram: |
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WIRING DIAGRAMS FOR 1994 GMC C2500 Suburban AUTOMOBILES
OEM drawn wiring diagrams for most 1994 GMC C2500 Suburban cars and light trucks sold in the U.S.
1994 GMC C2500 Suburban 7.4 V8 GAS Wiring Diagram Components on diagram: |
1994 GMC C2500 Suburban 7.4 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1994 GMC C2500 Suburban AUTOMOBILES
OEM TSB listings for most 1994 GMC C2500 Suburban cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1994 GMC C2500 Suburban 5.7 V8 GAS Auto Systems: |
Document: Bumps or Rust Colored Spots in Paint Due to Rail or Iron Dust Vehicle: 1994 GMC C2500 Suburban 5.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1994 GMC C2500 Suburban AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1994 GMC C2500 Suburban 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 1994 GMC C2500 Suburban 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 1994 GMC C2500 Suburban 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 1994 GMC C2500 Suburban 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
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