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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2003 GMC Sierra 3500
- 2003 GMC Sierra 3500 6.0 V8 GAS, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:U
- 2003 GMC Sierra 3500 8.1 V8 GAS, CID:496, Fuel Injection, Aspiration:496, Engine VIN:, Desg:G
- 2003 GMC Sierra 3500 6.6 V8 DIESEL, CID:400, Fuel Injection, Aspiration:400, Engine VIN:, Desg:1
- 2003 GMC Sierra 3500 6.0 V8 CNG, CID:364, Fuel Injection, Aspiration:364, Engine VIN:, Desg:U
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
Air Bag System Precautions -> General Motors Corp. -> Arming -> Light Trucks & Vans -> Passenger Cars
Vehicle: 2003 GMC Sierra 3500 6.6 V8 DIESEL
Passenger Cars
Reverse disarming procedures to arm the Supplemental Restraint System, noting the following:
- Ensure all disconnected SRS electrical connectors are securely connected and routed.
- Install all removed fuses in proper locations.
- From a safe position at sides of or below air bag module, Turn ignition switch to ON position and observe Air Bag or SRS warning lamp.
- On all models except Prizm and 1990 Corvette, warning lamp should flash seven to nine times, then go off.
- On Prizm models, warning lamp should light for six seconds,...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
Vehicle: 2003 GMC Sierra 3500 8.1 V8 GAS
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
General Service Domestic Vehicles -> 2003-04 -> System Inspection -> Compressor -> Condenser -> Evaporator -> Receiver-Drier/Accumulator -> Refrigerant Line Restrictions -> Thermostatic Expansion Valve
Vehicle: 2003 GMC Sierra 3500 6.0 V8 GAS
While a detailed diagnostic procedure for all air conditioning systems would be impractical due to the many variations in construction and operation, there are three fundamental components of a total diagnosis:
- Refrigerant systems must have an adequate, but not excessive charge.
- Determination must be made whether the refrigerant system is governed by a cycling clutch compressor or by valves which control evaporator pressure.
- The air distribution system (blower motor, switches, vacuum lines and air ducts) must be operational before checking the ...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
Manual Air Conditioning & Heater System Diagnosis & Testing -> Sierra & Silverado -> Air Conditioning System Troubleshooting
Vehicle: 2003 GMC Sierra 3500 8.1 V8 GAS
If an air conditioning system fault is suspected, inspect the following conditions:
- Inspect outer surfaces of radiator and condenser cores to ensure air flow is not blocked by dirt, leaves or other foreign material.
- Restrictions or kinks in condenser core, hoses or tubes.
- Blower motor operation.
- Refriger...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
Component Replacement & Adjustment -> Sierra & Silverado -> Evaporator Core, Replace
Vehicle: 2003 GMC Sierra 3500 6.0 V8 GAS
- Remove HVAC module as outlined in "Heating, Ventilation & Air Condition (HVAC) Module, Replace."
- Remove mount...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 GMC Sierra 3500 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 2003 GMC Sierra 3500 cars and light trucks from 1990+
Air Bag System Precautions -> General Motors Corp. -> Arming -> Light Trucks & Vans -> Passenger Cars
Vehicle: 2003 GMC Sierra 3500 6.6 V8 DIESEL
Passenger Cars
Reverse disarming procedures to arm the Supplemental Restraint System, noting the following:
- Ensure all disconnected SRS electrical connectors are securely connected and routed.
- Install all removed fuses in proper locations.
- From a safe position at sides of or below air bag module, Turn ignition switch to ON position and observe Air Bag or SRS warning lamp.
- On all models except Prizm and 1990 Corvette, warning lamp should flash seven to nine times, then go off.
- On Prizm models, warning lamp should light for six seconds,...
CLICK HERE TO GET FULL ACCESS TO 2003 GMC Sierra 3500 A/C & HEATER SERVICE PROCEDURES
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