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 1811 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSRADIATOR OUTLET HOSE REPLACEMENT (LAT)

2003 Chevrolet TrailBlazer 4.2 S, 4WD

Radiator Outlet Hose Replacement (LAT)

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Radiator Outlet Hose Replacement (LAT)

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Radiator Outlet Hose

Courtesy of GENERAL MOTORS CORP.

Radiator Outlet Hose Replacement (LAT)

Callout

Component Name

Preliminary Procedures

Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (GE 47716 Fill) .
Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the hose clamps from the radiator outlet hose.
Remove the hose clamp from the generator control module coolant pump.
Remove the hose clamp from the generator control module coolant outlet hose.

IMPORTANT: This hose is integral to the generator control module coolant hoses and must replaced as an assembly.

Radiator Outlet Hose

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.