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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 2003 Chevrolet Trailblazer car and truck
repair procedures including Chevrolet 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 Chevrolet Trailblazer automobile. Try the Automotix DIY solution today!
We have info for following modifications of 2003 Chevrolet Trailblazer
- 2003 Chevrolet Trailblazer 4.2 L6 GAS, CID:256, Fuel Injection, Aspiration:256, Engine VIN:, Desg:S
- 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS, CID:256, Fuel Injection, Aspiration:256, Engine VIN:, Desg:S
- 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS, CID:325, Fuel Injection, Aspiration:325, Engine VIN:, Desg:P
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
Component Replacement & Adjustment -> Bravada, Envoy, Rainer & TrailBlazer -> Condenser, Replace
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
- Recover refrigerant as outlined in .
- Remove nuts, then the compressor discharge hose and evaporator tube.
- Remove evaporator tube from condenser.
- Remove mounting bolts and hood latch. ...
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A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
Electrical Symbol & Wire Color Code Identification -> Wire Color Code Identification -> Domestic Vehicles
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
CLICK HERE TO GET FULL ACCESS TO 2003 Chevrolet Trailblazer A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
Component Replacement & Adjustment -> Bravada, Envoy, Rainer & TrailBlazer -> Heating, Ventilation & Air Condition (HVAC) Module, Replace -> Auxiliary -> Main
Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS
Main
- Drain engine coolant into suitable container.
- Recover refrigerant as outlined in .
- Block wheels.
- Remove rubber ash tray inserts and mat from console.
- Loosen set screw, then push in at base of boot to release locking tabs and pull up to remove knob and boot from transmission control.
- On Bravada and Rainer models, proceed as follows:
- Adjust shift lever fully rearward.
- Open storage bin cover and remove rubber mats.
- Remove sex mounting and storage bin.
- Starting at re...
CLICK HERE TO GET FULL ACCESS TO 2003 Chevrolet Trailblazer A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
Component Replacement & Adjustment -> Bravada, Envoy, Rainer & TrailBlazer -> Heater Core, Replace -> Auxiliary -> Main
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
Main
- Remove HVAC module as outlined in "Heating, Ventilation & Air Condition (HVAC) Module, Replace."
- Remove mounting screws and heater core access cover.
- Remove heater core.
- Reverse procedure to install. Torque heater core access cover mounting screws to 17 inch lbs.
Auxiliary
-
...
CLICK HERE TO GET FULL ACCESS TO 2003 Chevrolet Trailblazer A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
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: 2003 Chevrolet Trailblazer EXT 4.2 L6 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...
CLICK HERE TO GET FULL ACCESS TO 2003 Chevrolet Trailblazer A/C & HEATER SERVICE PROCEDURES
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer 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 Chevrolet Trailblazer cars and light trucks from 1990+
Manual Air Conditioning & Heater System Diagnosis & Testing -> Bravada, Envoy, Rainier & Trailblazer -> Diagnosis & Testing -> Accessing Diagnostic Trouble Codes -> Clearing Diagnostic Trouble Codes -> Diagnostic Tests -> Diagnostic Trouble Code Interpretation -> Intermittents -> System Performance Test
Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS
Accessing Diagnostic Trouble Codes
Connect a suitably programmed scan tool to the Data Link Connector (DLC) and follow manufacturer's instructions.
Intermittents
Because many intermittent faults are caused at electrical connections, diagnosis of such problems should begin with a visual and physical inspection of connectors involved with the code. Appropriate connectors should be disconnected, examined and...
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