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2003 Chevrolet Trailblazer CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Chevrolet 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
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- 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 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 Chevrolet Trailblazer automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Component Replacement & Adjustment -> Bravada, Envoy, Rainer & TrailBlazer -> Water Pump, Replace -> 4.2L Engine -> 5.3L Engine
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
4.2L Engine
- Drain coolant into suitable container.
- Remove mounting bolts and radiator support diagonal brace.
- Disconnect Secondary Air Injection (AIR) reaction pump inlet hose from air cleaner air outlet duct.
- Loosen three mounting screws and air cleaner cover/resonator.
- Lift air cleaner element and air outlet duct from lower air cleaner housing/washer solvent tank and position them aside.
- Disconnect windshield washer pump, headlamp washer pump, low solvent level sensor and lift gate washer pump electrical connectors.
- Remove washer...
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BRAKE SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Disc Brakes -> Delco Dual Piston Sliding Caliper -> Caliper Service -> Assemble -> Disassemble -> Inspection -> Installation -> Removal
Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS
Removal
- Siphon 2/3 of the brake fluid from master cylinder.
- Raise and support vehicle.
- Remove tire and wheel assembly.
- Compress caliper pistons until they bottom in bores using suitable clamp,. Fig. .
- Disconnect brake hose at caliper by removing inlet fitting bolt.
- Remove mounting bolts and caliper.
Inspection
Should it become required to remove the caliper for installation of new components, clean components in denatured alcohol, wipe dry using lint-free cloths. Blow out drilled passages and holes using compressed air. Inspect dust boots for punctures or tears. If punctures or tears ar...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
General Motors Corp./Saturn Light Trucks, SUVs & Vans -> Fuel Filter Scheduled Maintenance -> 2002-03 Envoy, Rainier & TrailBlazer -> Normal Service -> Severe Service
Vehicle: 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS
Normal Service
Replace ...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS
- Unlock steering column so that steering linkage is free to move.
- Raise the vehicle. Support vehicle with suitable safety stands.
- Remove front tire and wheel assemblies.
- In order to prevent drive axle from turning, insert a drift through brake caliper and into one of the rotor vanes.
- Remove axle nut and washer.
- Remove drift from brake rotor.
- Remove front brake rotors and support caliper with piece of wire in order to prevent damage to brake hose.
- Remove brackets from upper control arm holding both ABS wire and brake hose.
- Remove ABS bracket located on top of upper control arm ball...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Alternator, Replace
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
- Disconnect battery ground cable.
- Remove air inlet duct.
- Remove heater hose brace bolt from rear of alternator.
- Disconnect alternator electrical connectors.
- Remove accessory drive belt.
- Remove alternator mounti...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
General Motors Corp./Saturn Trucks -> All Wheel Drive (AWD) System Warning Lamp ->
Vehicle: 2003 Chevrolet Trailblazer EXT 5.3 V8 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned On as a bulb check. If the war...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp from radiator.
- Remove radiator outlet hose from radiator.
- Reposition hose clamp from thermostat housing.
- Remove radiator outlet hose from thermostat housing and from vehicle.
- Reverse procedure to in...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS
- Rotate or lift the belt tensioner arm, using a suitable tool to relieve tension from drive belt.
- Remove t...
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COMPONENT LOCATION DIAGRAMS FOR 2003 Chevrolet Trailblazer AUTOMOBILES
Component location diagrams for most 2003 Chevrolet Trailblazer cars and light trucks sold in the U.S. from 1990+.
 Fuel Tank Diagram for 2003 Chevrolet Trailblazer 4.2 L6 GASComponents on diagram: |
 Splice Pack SP-206 Diagram for 2003 Chevrolet Trailblazer 4.2 L6 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2003 Chevrolet Trailblazer AUTOMOBILES
OEM drawn wiring diagrams for most 2003 Chevrolet Trailblazer cars and light trucks sold in the U.S.
 2003 Chevrolet Trailblazer EXT 4.2 L6 GAS Wiring DiagramComponents on diagram: |
 2003 Chevrolet Trailblazer 4.2 L6 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2003 Chevrolet Trailblazer AUTOMOBILES
OEM TSB listings for most 2003 Chevrolet Trailblazer cars and light trucks sold in the U.S. from 1985+.
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Document: Engine Rattle Noise after R And R of the Crankshaft Balancer -Inspect Bolt Torque Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS Symptoms: |
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Document: Revised General Motors New Vehicle Tire Warranty Program Vehicle: 2003 Chevrolet Trailblazer 4.2 L6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2003 Chevrolet Trailblazer AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2003 Chevrolet Trailblazer 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 2003 Chevrolet Trailblazer 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 2003 Chevrolet Trailblazer 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 2003 Chevrolet Trailblazer 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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