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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 1994 GMC C3500 Pickup automobile. Try the Automotix DIY solution today!
We have info for following modifications of 1994 GMC C3500 Pickup
- 1994 GMC C3500 Pickup Sierra 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
- 1994 GMC C3500 Pickup Sierra 7.4 V8 GAS, CID:454, Fuel Injection, Aspiration:454, Engine VIN:, Desg:N
- 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESEL, CID:395, Fuel Injection, Aspiration:395, Engine VIN:, Desg:F
- 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS, CID:350, Fuel Injection, Aspiration:350, Engine VIN:, Desg:K
- 1994 GMC C3500 Pickup Sierra XC 7.4 V8 GAS, CID:454, Fuel Injection, Aspiration:454, Engine VIN:, Desg:N
- 1994 GMC C3500 Pickup Sierra XC 6.5 V8 DIESEL, CID:395, Fuel Injection, Aspiration:395, Engine VIN:, Desg:F
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
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: 1994 GMC C3500 Pickup Sierra XC 6.5 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...
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A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
Manual Air Conditioning & Heater System Diagnosis & Testing -> Light Duty Trucks & Vans -> A/C SYSTEM DIAGNOSIS & TESTING -> Astro, Safari, C, G, K, P Series & Tracker & S & T Series w/4.3L & Lumina APV, Silhouette & Trans Sport w/3800 Engine -> FRONT A/C -> Lumina APV, Silhouette & Trans Sport -> Lumina APV, Silhouette & Trans Sport w/3.1L & S Series w/2.2L Engine -> REAR A/C
Vehicle: 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS
On models equipped with a Powertrain Control Module (PCM) or Vehicle Control Module (VCM) controlled A/C system, connect a suitable Scan Tool to the Diagnostic Link Connector (DLC), normally located behind the lefthand side of the instrument panel, near the steering column.
FRONT A/C
Lumina APV, Silhouette & Trans Sport w/3.1L & S Series w/2.2L Engine
Re...
CLICK HERE TO GET FULL ACCESS TO 1994 GMC C3500 Pickup A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
Component Replacement & Adjustment -> Light Duty Trucks & Vans -> THERMOSTAT, REPLACE -> ASTRO, BRAVADA, SAFARI & S & T Series -> C, G, K & P SERIES -> Diesel Engine -> Gasoline Engine -> LUMINA APV, SILHOUETTE & TRANS SPORT -> TRACKER
Vehicle: 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS
C, G, K & P SERIES
Gasoline Engine
- Disconnect battery ground cable.
- Remove engine cover, air cleaner and air inlet duct, as necessary.
- Drain cooling system until radiator coolant level is below thermostat level.
- Remove radiator hose at coolant outlet.
- Remove thermostat housing attaching bolts and ground wire, if applicable.
- Remove thermostat housing, thermostat and gasket.
- Reverse procedure to install.
Diesel Engine
- Disconnect batteries.
- Remove upper fan shroud, then drain engine coolant b...
CLICK HERE TO GET FULL ACCESS TO 1994 GMC C3500 Pickup A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
Component Replacement & Adjustment -> Light Duty Trucks & Vans -> EXPANSION TUBE (ORIFICE), REPLACE -> FRONT UNIT
Vehicle: 1994 GMC C3500 Pickup Sierra XC 6.5 V8 DIESEL
FRONT UNIT
- Recover refrigerant from A/C system.
- Loosen nut at liquid line to evaporator inlet pipe connection. Carefully remove tube, using needle nose pliers or other suitable tool. If expansion tube is seized in its receptacle, remove impacted residue as completely as possible. Using a suitable heat gun or equivalent (hair dryer), apply heat to area 1/4 inches from inlet pi...
CLICK HERE TO GET FULL ACCESS TO 1994 GMC C3500 Pickup A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
Cooling Fans -> Light Duty Trucks & Vans -> PRECAUTIONS -> AIR BAG SYSTEM DISARMING & ARMING
Vehicle: 1994 GMC C3500 Pickup Sierra XC 5.7 V8 GAS
AIR BAG SYSTEM DISARMING & ARMING
Refe...
CLICK HERE TO GET FULL ACCESS TO 1994 GMC C3500 Pickup A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 1994 GMC C3500 Pickup AUTOMOBILES
Air Conditioner and Heater Service Includes module configuration procedures, general service, maintenance, automatic temperature control, compressor services, electric cooling fans, vacuum diagrams, specifications, and manual air conditioning and heater diagnostics and replacement procedures for domestic and imported 1994 GMC C3500 Pickup cars and light trucks from 1990+
Component Replacement & Adjustment -> Light Duty Trucks & Vans -> HEATER CORE, REPLACE -> ASTRO & SAFARI -> Auxiliary Unit -> C & K SERIES -> G & P SERIES -> LUMINA APV, SILHOUETTE & TRANS SPORT -> Main Unit -> S & T Series -> TRACKER
Vehicle: 1994 GMC C3500 Pickup Sierra 6.5 V8 DIESEL
ASTRO & SAFARI
Main Unit
- Disconnect battery ground cable.
- Drain cooling system.
- Disconnect heater hoses from core tubes, then remove instrument panel lower right filler panel.
- Remove lower air distributor duct, then defroster outlet duct.
- Remove heater case cover mounting screws, then case cover.
- Remove the heater core mounting screws, then heater core.
- Reverse procedure to install.
Auxiliary Unit
- Disconnect battery ground cable.
- Drain cooling system.
- Disconnect clamps from heater p...
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