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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1896 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSRADIATOR REPLACEMENT (WITH HP5)
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Radiator Replacement (With HP5)

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Radiator Replacement (With HP5)
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Radiator
GM1875459Courtesy of GENERAL MOTORS CORP.
Callout Component Name

Preliminary Procedure

  1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill With HP5)  or Cooling System Draining and Filling (GE 47716 Fill With HP5) .
  2. Disconnect the hybrid system. Refer to Hybrid Battery Service Disconnect/Connect .
  3. Raise and suitably support the vehicle as necessary. Refer to Lifting and Jacking the Vehicle .
  4. Remove radiator opening upper cover. Refer to Radiator Opening Upper Cover Replacement
  5. Remove front fascia. Refer to Front Bumper Fascia Replacement (Base) or Front Bumper Fascia Replacement (Red Line)
  6. Remove the front bumper impact bar. Refer to Front Bumper Impact Bar Replacement .
  7. Remove compressor hose/pipe bolt from bracket at top radiator support.
  8. Remove mounting bolts (Qty: 3) from condenser, reposition and support the condenser. Refer to Air Conditioning Condenser Replacement (With HP5) or Air Conditioning Condenser Replacement (Without HP5) .
  9. Remove radiator inlet and outlet hoses. Refer to Radiator Inlet Hose Replacement (LAT)  or Radiator Inlet Hose Replacement (HP5)  and Radiator Outlet Hose Replacement (LAT)  or Radiator Outlet Hose Replacement (HP5) .
  10. Disconnect transmission oil cooler lines from the radiator.
  11. Remove fan shroud bolts (Qty: 2) and reposition.
1 Radiator Support Bolt (Qty: 2)
CAUTION: Refer to Fastener Caution .

Tighten:  22 N.m (16 lb ft)
2 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.