LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1620 (Engine Cooling System) >> Repair Instructions >> Draining and Filling Cooling System >> Engine Block Draining

Engine Block Draining

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system, refer to the above procedure.
  2. If equipped with the 4.3 L engine, remove the left and right engine block coolant drain plugs.
  3. If equipped with the 4.8 L, 5.3 L, or 6.0 L engine, remove the left and right engine block coolant drain plugs.
    Fig 1: Remove Left & Right Engine Block Coolant Drain Plugs
    G02108964Courtesy of GENERAL MOTORS CORP.
  4. If equipped with the 6.6 L diesel engine, remove the left and right engine block coolant drain plugs and washers.
    Fig 2: Remove Left & Right Engine Block Coolant Drain Plugs & Washers
    G02108965Courtesy of GENERAL MOTORS CORP.
  5. If equipped with the 8.1 L engine, remove the left and right engine block coolant drain plugs.
  6. Remove the engine block coolant heater, if equipped. Refer to Coolant Heater Replacement (4.3L Engine)  or  Coolant Heater Replacement (4.8L, 5.3L, and 6.0L Engines)   or  Coolant Heater Replacement (6.6L Engine)   or  Coolant Heater Replacement (8.1L Engine)   .
  7. Allow the engine block to drain completely.
  8. Apply sealant to all drain plugs, EXCEPT the 6.6 L diesel engine plugs.
  9. Re-install the engine block coolant drain plugs.

    Tighten 

    • Tighten the 4.3 L engine block coolant drain plug to 20 N.m (15 lb ft).
    • Tighten the 4.8 L, 5.3 L, or 6.0 L engine block coolant drain plug to 60 N.m (44 lb ft).
      Fig 3: Installing Engine Block Coolant Drain Plugs
      G02108966Courtesy of GENERAL MOTORS CORP.
    • Tighten the 6.6 L diesel engine block coolant drain plug to 18 N.m (13 lb ft).
    • Tighten the 8.1 L engine block coolant drain plug to 60 N.m (44 lb ft).
  10. Install the engine block coolant heater, if equipped. Refer to Coolant Heater Replacement (4.3L Engine)  or  Coolant Heater Replacement (4.8L, 5.3L, and 6.0L Engines)   or  Coolant Heater Replacement (6.6L Engine)   or  Coolant Heater Replacement (8.1L Engine)   .
  11. Fill the cooling system, refer to the above procedure.
scientia non olet · About LEMON Manuals