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1994 GMC K3500 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
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC K3500 Pickup AUTOMOBILES
Computer Relearn Procedures -> General Motors Corp. -> 1997-98 -> 1998-2000 -> 1998-99 -> 1999-2001 -> 1999-2002 -> 2.2L & 2.4L Engines -> 2000-02 -> 2000-04 -> 2001-02 -> 2001-04 -> 3.1L, 3.4L, 3800/3.8L, 4.0L & 4.6L Engines -> 3.5L Engine -> 5.7L Engine -> Achieva, Alero, Grand Am & Skylark -> Achieva, Cavalier, Skylark & Sunfire -> Alero & Grand Am -> Alero & Malibu -> Aurora -> Aurora, Bonneville, DeVille, LeSabre & Seville -> Aurora, Bonneville, Grand Prix, LeSabre & Park Avenue -> Auto Learn Passlock Procedure -> Body Control Module (BCM) -> Bonneville -> Bonneville, Eighty Eight, LeSabre, LSS & Park Avenue -> C & K Series w/Diesel Engine -> C & K Trucks w/Diesel Engine -> Camaro & Firebird -> Catera -> Cavalier & Sunfire -> Century -> Century, Grand Prix, Impala, Intrigue, Lumina, Monte Carlo & Regal -> Century, Impala, Intrigue, Monte Carlo & Regal -> Corvette -> Crankshaft Position System Variation Learn -> Cutlass & Malibu -> Dash Integration Module (DIM) -> DeVille -> DeVille, Eldorado & Seville -> EEPROM -> Eldorado -> Engine Control Module (ECM) -> Engine Performance -> Except Park Avenue -> Grand Am -> Grand Prix & Regal -> Impala & Monte Carlo -> Instrument Panel Integration Module (IPM) -> Intrigue -> LeSabre -> Less Tech 2 Or Techline Terminal -> Light Truck & Vans -> Park Avenue -> Passenger Cars -> Passkey Module -> Passlock Learn Procedure -> PCM -> Powertrain Control Module (PCM) -> Powertrain Control Module (PCM) & Vehicle Control Module (VCM) -> Rear Integration Module -> Riviera -> Seville -> T50/T60/T20+ -> TDC Offset Adjustment -> Theft Deterrent System Programming -> VCM -> With Tech 2 -> With Techline Terminal & Scan Tool
Vehicle: 1994 GMC K3500 Pickup Sierra 5.7 V8 GAS
Passenger Cars
Body Control Module (BCM)
Alero & Grand Am
This procedure must be performed if the BCM, Passlock sensor or PCM is replaced. If BCM is not properly programmed, it will not control all the features properly.
- Ensure battery is fully charged and ignition switch is in the ON position.
- Connect a suitably programmed Tech II, or equivalent, scan tool to Data Link Connector (DLC).
- Access scan tool "Special Functions" menu and follow scan tool instructions to program BCM.
- If BCM fails to accept the pr...
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BRAKE SERVICE PROCEDURES FOR 1994 GMC K3500 Pickup AUTOMOBILES
Drum Brakes -> Tightening Specifications
Vehicle: 1994 GMC K3500 Pickup Sierra XC 6.5 V8 DIESEL
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1994 GMC K3500 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 K3500 Pickup Sierra XC 5.7 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 K3500 Pickup 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 K3500 Pickup Sierra XC 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 K3500 Pickup AUTOMOBILES
Alternator, Replace
Vehicle: 1994 GMC K3500 Pickup Sierra 6.5 V8 DIESEL
- 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...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1994 GMC K3500 Pickup AUTOMOBILES
General Motors Corp./Saturn Trucks -> Diesel Engine Water In Fuel Or Drain Fuel Filter Warning Lamp ->
Vehicle: 1994 GMC K3500 Pickup Sierra 6.5 V8 DIESEL
The "Water in Fuel" indicator will light when excessive water has entered the fuel system. A low pressure sensor activates the lamp as the fuel filter becomes plugged. The lamp will light during engine starting as a bulb check.
Once engine has started, the lamp should go Off. If the lamp is lit intermittently or remains lit, drain fuel filter. If the lamp still remains On after fuel filter has been drained, replace fuel filter. If lamp is lit during high speed opera...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1994 GMC K3500 Pickup AUTOMOBILES
Radiator, Replace
Vehicle: 1994 GMC K3500 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 K3500 Pickup AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1994 GMC K3500 Pickup Sierra XC 5.7 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 K3500 Pickup AUTOMOBILES
Component location diagrams for most 1994 GMC K3500 Pickup cars and light trucks sold in the U.S. from 1990+.
Battery Junction Block & Relays Diagram for 1994 GMC K3500 Pickup Sierra XC 6.5 V8 DIESEL Components on diagram: |
LH Side of I/P Diagram for 1994 GMC K3500 Pickup Sierra XC 6.5 V8 DIESEL Components on diagram: |
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WIRING DIAGRAMS FOR 1994 GMC K3500 Pickup AUTOMOBILES
OEM drawn wiring diagrams for most 1994 GMC K3500 Pickup cars and light trucks sold in the U.S.
1994 GMC K3500 Pickup Sierra 7.4 V8 GAS Wiring Diagram Components on diagram: |
1994 GMC K3500 Pickup Sierra 7.4 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1994 GMC K3500 Pickup AUTOMOBILES
OEM TSB listings for most 1994 GMC K3500 Pickup 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 K3500 Pickup Sierra 5.7 V8 GAS Auto Systems: |
Document: Bumps or Rust Colored Spots in Paint Due to Rail or Iron Dust Vehicle: 1994 GMC K3500 Pickup Sierra 5.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1994 GMC K3500 Pickup AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1994 GMC K3500 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 K3500 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 K3500 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 K3500 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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