Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 738 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSRADIATOR REPLACEMENTREMOVAL PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Removal Procedure
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the battery. Refer to BATTERY REPLACEMENT .
- Remove the battery tray.
- Recover the A/C system. Refer to RECOVERY/EVACUATION & RECHARGING .
- Drain the cooling system. Refer to Draining and Filling Cooling System .
- Remove the upper radiator hose.
- Remove the upper transaxle cooler line.
- Remove the coolant surge tank hose.
- Remove the condenser inlet fitting from the discharge hose.
- Disconnect the cooling fan electrical connector.
- Raise the vehicle. Refer to LIFTING AND JACKING THE VEHICLE .
- Remove the lower closeout panel.
- Remove the lower radiator hose from the radiator.
- Remove the lower transaxle cooler line.
- Remove the evaporator line from the condenser outlet.
- Remove the lower radiator mounting panel.
- Remove the radiator, fan and condenser as an assembly from the vehicle.
- Remove the condenser from the radiator.
- Remove the fan shroud from the radiator.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.