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Home >> Cadillac >> 2006 >> STS Base, 3.6 7, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 4.4L (1 Of 5)) >> On-Vehicle Repair Instructions (Part 1) >> Charge Air Cooler Cooling Tube Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    IMPORTANT: The charge air cooling tubes are replaced as a set. If any one of the charge air cooler cooling tubes needs to be replaced, all the charge air cooler cooling tubes must be replaced in order to maintain consistent cooling of the charge air.
  1. Drain the charge air cooling system. Refer to Charge Air Cooling System Draining and Filling (Static Fill) or Charge Air Cooling System Draining and Filling (Vac N Fill) .
    2. Fig 1: Charge Air Cooler Front Manifold
    GM1644346Courtesy of GENERAL MOTORS CORP.
  2. Remove the front section of the supercharger inlet duct assembly. Refer to Supercharger Inlet Duct Assembly Replacement .
    3. IMPORTANT: Do not allow any draining coolant to contact the supercharger drive belt.
  3. Place a shop rag under the front portion of the supercharger to collect any remaining coolant that may drain from the charge air cooling system.
  4. Remove the charge air cooler front manifold, gasket, O-rings, and spacers. Refer to Charge Air Cooler Front Manifold Replacement .
    5. Fig 2: Charge Air Cooler Rear Manifold
    GM1644359Courtesy of GENERAL MOTORS CORP.
  5. Remove the charge air cooler rear manifold, gaskets, O-rings, and spacers. Refer to Charge Air Cooler Coolant Rear Manifold Replacement .
    6. Fig 3: Outboard Charge Air Cooler Cooling Tubes
    GM1687870Courtesy of GENERAL MOTORS CORP.
  6. Carefully remove the outboard charge air cooler cooling tubes.
  7. The charge air cooler cooling tubes are fragile and must be placed in a protected area.
    8. Fig 4: Inboard Charge Air Cooler Cooling Tubes
    GM1687874Courtesy of GENERAL MOTORS CORP.
  8. Carefully remove the inboard charge air cooler cooling tubes.
  9. The charge air cooler cooling tubes are fragile and must be placed in a protected area.
    10. Fig 5: Charge Air Cooler Cooling Tubes
    GM1644408Courtesy of GENERAL MOTORS CORP.
  10. Inspect the charge air cooler cooling tubes for the following:
    • Damaged, clogged, bent or missing fins (1)
    • Damage, corrosion or restrictions to the cooling passages (2)
    • Damage, corrosion, restrictions or missing diversion end plate (3)
    11. Fig 6: Charge Air Cooler Cooling Tubes
    GM1644411Courtesy of GENERAL MOTORS CORP.
  11. Inspect the charge air cooler cooling tubes for the following:
    • Damaged, clogged, bent or missing fins (1)
    • Damage, corrosion or restrictions to the cooling passages (2)
    • Damage, corrosion or restrictions to the intake end (3)
    12. IMPORTANT: The charge air cooling tubes are replaced as a set. If any one of the charge air cooler cooling tubes needs to be replaced, all the charge air cooler cooling tubes must be replaced in order to maintain consistent cooling of the charge air.
  12. Replace any damaged, corroded or restricted charge air cooler cooling tubes as a set.
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