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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1136 (Engine Cooling System) >> Diagnostic Information and Procedures >> After Boil Coolant Pump Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Test for a blockage or restriction in the auxiliary coolant pump lines and hoses.
  2. Test the pump coolant passage for a blockage or a restriction.
  3. Test the pump impeller for a seized or binding condition.
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