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HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1811 (ENGINE COOLING SYSTEM)REPAIR INSTRUCTIONSRADIATOR REPLACEMENT (L66)INSTALLATION PROCEDURE
2003 Chevrolet TrailBlazer 4.2 S, 4WD

Installation Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Installation Procedure
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 Seals
    GM931817Courtesy of GENERAL MOTORS CORP.
  1. Install the radiator seals to the radiator.
  2. Install the radiator to the vehicle.
    3. Fig 2: View Of Radiator Outlet Hose
    GM1252572Courtesy of GENERAL MOTORS CORP.
  3. Install the radiator outlet hose to the radiator.
  4. Install the radiator outlet hose clamp to the radiator.
    5. Fig 3: View Of Radiator Hose
    GM1252561Courtesy of GENERAL MOTORS CORP.
  5. Install the radiator inlet hose to the radiator.
  6. Install the radiator inlet hose clamp to the radiator.
    7. Fig 4: View Of CRFM Mounting Brackets To The Radiator Support
    GM948980Courtesy of GENERAL MOTORS CORP.
  7. Install the CRFM bracket to the radiator support.
    8. NOTE: Refer to Fastener Notice .
  8. Install the CRFM brackets bolts to the radiator.

    Tighten:  Tighten the bolt to 8 N.m (71 lb in).

    9. Fig 5: View Of Transmission Cooler Liners To The Radiator
    GM1340584Courtesy of GENERAL MOTORS CORP.
  9. Connect the transmission cooler lines to the radiator.
    10. Fig 6: View Of Condenser To The Radiator
    GM949047Courtesy of GENERAL MOTORS CORP.
  10. Install the condenser to the radiator. Press down to engage the upper retention tabs.
    11. Fig 7: View Of Fan Assembly Bolts From The Radiator
    GM931378Courtesy of GENERAL MOTORS CORP.
  11. Install the fan assembly to the radiator.
  12. Install the fan assembly bolts to the radiator.

    Tighten:  Tighten the bolts to 8 N.m (71 lb in).

    13. Fig 8: View Of CRFM Closeout/Splash Panel To Condenser
    GM948958Courtesy of GENERAL MOTORS CORP.
  13. Install the CRFM closeout panel to the condenser.
  14. Install the CRFM closeout panel retainers to the condenser.
  15. Install the front fascia. Refer to Front Bumper Fascia Replacement (Redline) or Front Bumper Fascia Replacement (Standard) .
  16. Fill the cooling system. Refer to Draining and Filling Cooling System (Static Fill)  or Draining and Filling Cooling System (GE 47716 Fill) .
RENDER: 1.0x

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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.