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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 66 (Engine Cooling System) >> Repair Instructions >> Draining and Filling Cooling System (Vac-N-Fill) >> Draining Procedure

Draining Procedure

WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.
IMPORTANT: Do not use coolant system sealers in this cooling system.
  1. Park the vehicle on a level surface.
  2. Remove the surge tank cap.
  3. Remove the air box. Refer to Air Cleaner Assembly Replacement .
  4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  5. Remove the air deflector. Refer to Front Air Deflector Replacement .
  6. Lower the vehicle.
  7. Place a drain pan under the lower radiator hose connection.
  8. Using the J 38185  reposition the lower radiator hose clamp away from the radiator. See Special Tools .
  9. Slowly remove the lower radiator hose and drain the coolant into the drain pan.
  10. Inspect the engine coolant for the following conditions:
    • Discolored appearance-Follow the flush procedure. Refer to Flushing .
    • Normal in appearance-Follow the filling procedure.