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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 269 (COOLING SYSTEM)COOLING FAN MOTOR COMPONENT INSPECTION
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Cooling Fan Motor Component Inspection

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Cooling Fan Motor Component Inspection
WARNING: This page is about a different car, the 2004 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform cooling fan control system inspection. (See COOLING FAN CONTROL SYSTEM INSPECTION .)
    • If the cooling fan control does not operate properly, inspect the following:
      • ECT sensor.
      • A/C switch.
      • A/C refrigerant pressure switch (High/low pressure).
      • A/C refrigerant pressure switch (Middle pressure).
      • VSS.
      • A/C magnetic clutch.
      • Fan control module power supply circuit.
      • Fan control module GND circuit.
      • Fan control signal circuit (between fan control module terminal B and PCM terminal 1W).
        • If the all items are okay, replace cooling fan component.
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.