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Home >> Cadillac >> 2003 >> DeVille DTS >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Troubleshooting - No Codes >> Symptoms >> Engine Backfires >> Engine Cooling System
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Engine Cooling System

  1. Inspect for proper engine coolant level.
  2. Inspect the engine thermostat for proper operation or for the wrong heat range. See appropriate COOLING SYSTEM SPECIFICATIONS & DRIVE BELT ROUTING article in ENGINE COOLING.
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