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1994 GMC C3500 Pickup 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1994 GMC C3500 Pickup 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 C3500 Pickup automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Component Replacement & Adjustment -> Light Duty Trucks & Vans -> ADJUSTMENTS -> C & K Series -> CONTROL CABLES -> G SERIES -> Less A/C -> MODE/TEMPERATURE/RECIRCULATION ACTUATORS -> S & T Series -> With A/C
Vehicle: 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS
CONTROL CABLES
G SERIES
Less A/C
- Disconnect battery ground cable.
- Attach inner cable and sheath to instrument panel control.
- Move temperature cable to "Cold" then attach loop on inner cable to temperature door on heater case.
- Attach cable sheath to heater case, then move temperature lever to full "Heat." This will require force to slide inner cable clip to its proper position.
- Move temperature adjusting lever quickly from "Cold" to "Hot." Door should be heard seating at stops.
With A/C
The temperature door ca...
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BRAKE SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Disc Brakes -> Bendix Single Piston Sliding Caliper -> Brake Pad Service
Vehicle: 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESEL
The procedures to remove & install the brake pads are outlined under "Caliper Service, Removal" and "Caliper S... "
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1994 GMC C3500 Pickup 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: 1994 GMC C3500 Pickup Sierra XC 7.4 V8 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 1994 GMC C3500 Pickup AUTOMOBILES
DRIVESHAFT, Replace -> One Piece Driveshaft -> Three Piece Driveshaft -> Two Piece Driveshaft
Vehicle: 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESEL
One Piece Driveshaft
- Reference mark propeller shaft to pinion flange connection.
- Reference mark slip yoke to transmission for proper reassembly.
- When servicing driveshafts with pop on seal, do not remove seal from sleeve. Removal of seal causes damage to seal lip where it contacts sleeve yoke. If removal of seal is necessary, replace seal with a new unit.
- Remove bolts.
- Remove retainers.
- Remove yoke and cross assembly, wrapping bearing cups with tape in order to prevent loss of bearing rollers. When removing propeller shaft, do not attempt to remove shaft by pounding on yoke ears o...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Starter, Replace
Vehicle: 1994 GMC C3500 Pickup Sierra XC 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 C3500 Pickup AUTOMOBILES
General Motors Corp./Saturn Trucks -> Traction Control System (TCS)/Electronic Stability Control (ESC) Warning Lamp ->
Vehicle: 1994 GMC C3500 Pickup Sierra 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 t...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Radiator, Replace
Vehicle: 1994 GMC C3500 Pickup Sierra 5.7 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...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1994 GMC C3500 Pickup Sierra 7.4 V8 GAS
- Rotate tensioner counterclockwise, using a 1/2 inch breaker bar with a socket placed on tensioner ...
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COMPONENT LOCATION DIAGRAMS FOR 1994 GMC C3500 Pickup AUTOMOBILES
Component location diagrams for most 1994 GMC C3500 Pickup cars and light trucks sold in the U.S. from 1990+.
Auxiliary Battery/Relay Wiring Diagram for 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GASComponents on diagram: |
PCM Location Diagram for 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESELComponents on diagram: |
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WIRING DIAGRAMS FOR 1994 GMC C3500 Pickup AUTOMOBILES
OEM drawn wiring diagrams for most 1994 GMC C3500 Pickup cars and light trucks sold in the U.S.
1994 GMC C3500 Pickup Sierra 7.4 V8 GAS Wiring DiagramComponents on diagram: |
1994 GMC C3500 Pickup Sierra 7.4 V8 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1994 GMC C3500 Pickup AUTOMOBILES
OEM TSB listings for most 1994 GMC C3500 Pickup cars and light trucks sold in the U.S. from 1985+.
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Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1994 GMC C3500 Pickup Sierra 5.7 V8 GAS Auto Systems: |
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Document: Bumps or Rust Colored Spots in Paint Due to Rail or Iron Dust Vehicle: 1994 GMC C3500 Pickup Sierra 5.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1994 GMC C3500 Pickup AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1994 GMC C3500 Pickup 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 C3500 Pickup 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 C3500 Pickup 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 C3500 Pickup 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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Auxiliary Battery/Relay Wiring Diagram for 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS
PCM Location Diagram for 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESEL
1994 GMC C3500 Pickup Sierra 7.4 V8 GAS Wiring Diagram
1994 GMC C3500 Pickup Sierra 7.4 V8 GAS Wiring Diagram
