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Home >> Cadillac >> 2003 >> Seville SLS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Troubleshooting - No Codes >> Symptoms >> Poor Fuel Economy >> Engine Cooling System
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Engine Cooling System

  1. Inspect for low engine coolant level.
  2. Inspect for an incorrect or malfunctioning engine coolant thermostat. See appropriate COOLING SYSTEM SPECIFICATIONS & DRIVE BELT ROUTING article in ENGINE COOLING.
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