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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1864 (Engine Cooling System) >> Diagnostic Information and Procedures >> Cooling Fan Always On (3.5L) >> Circuit/System Verification

Circuit/System Verification

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.
  1. Verify that the following DTCs are not set: P0480, P0481.
  2. Ignition ON, verify with a scan tool that the PCM is not commanding fan activation.
  3. Ignition ON, observe that the fans are not activated.
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