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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 37 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (2 Of 3)) >> Off-Vehicle Repair Instructions (Part 2) >> Exhaust Gas Recirculation (EGR) Cooler Cleaning and Inspection

Exhaust Gas Recirculation (EGR) Cooler Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Remove the EGR cooling hoses.
  2. Clean and inspect the EGR gasket surfaces.
  3. Clean and inspect the EGR and cooler.
    Fig 1: Locating EGR Cooler Inspection Areas
    GM1397832Courtesy of GENERAL MOTORS CORP.
  4. Replace the EGR or cooler if damaged.
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