GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Engine 🢒 Engine Electrical 🢒 Radiator Replacement

Removal Procedure

    Object Number: 160869 Size: SH
  1. Partially drain the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.
  2. Remove the air cleaner and the duct. Refer to Air Cleaner Assembly Replacement 4.3L or Air Cleaner Assembly Replacement 5.0/5.7L or Air Cleaner Assembly Replacement 6.5L or Air Cleaner Assembly Replacement 7.4L in Engine Controls.
  3. Remove the coolant recovery reservoir (Gas Engines) or the surge tank (Diesel Engines).
    4. • For the coolant recovery reservoir (Gas Engines), refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
    • For the surge tank (Diesel Engines), refer to Surge Tank (Diesel) Replacement in Engine Cooling.
  4. Remove the upper fan shroud retaining bolts from the top of the radiator.

    5. Object Number: 160871 Size: SH
  5. Remove the upper to lower fan shroud retaining bolts.
  6. Remove the upper fan shroud from the vehicle.
  7. Remove the fan and the clutch from the engine. Refer to Fan Clutch Replacement in Engine Cooling.

    8. Object Number: 160873 Size: SH
  8. Remove the lower fan shroud retaining bolts.
  9. Remove the lower fan shroud from the vehicle.

    10. Object Number: 71659 Size: SH
  10. Disconnect the clamps at the upper and the lower radiator hoses.
  11. Remove the upper and lower radiator hoses from the radiator.
  12. Disconnect the transmission oil cooler lines from the radiator. Refer to Oil Cooler Line Replacement in Automatic Transmission.
  13. Disconnect the engine oil cooler lines from the radiator. Refer to Engine Oil Cooler Hose/Pipe Replacement in Engine Cooling.

    14. Object Number: 160875 Size: SH
  14. Remove the radiator from the vehicle.

Installation Procedure

    Notice: When adding coolant, use DEX-COOL® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner-at 50 000 km (30,000 mi) or 24 months.


    Object Number: 160875 Size: SH
  1. Install the radiator to the vehicle.
  2. Install the engine oil cooler lines to the vehicle. Refer to Engine Oil Cooler Hose/Pipe Replacement in Engine Cooling.
  3. Install the transmission oil cooler lines. Refer to Oil Cooler Line Replacement in Automatic Transmission.

    4. Object Number: 71659 Size: SH
  4. Connect the upper and the lower hoses to the radiator.
  5. Install the clamps to the upper and lower radiator hose.

    6. Object Number: 160873 Size: SH
  6. Install the lower fan shroud to the vehicle.

    7. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  7. Install the retaining bolts to the lower fan shroud.

    8. Tighten
    Tighten the lower fan shroud retaining bolts to 8 N·m (71 lb in).

  8. Install the fan and the clutch to the engine. Refer to Fan Clutch Replacement in Engine Cooling.

    9. Object Number: 160871 Size: SH
  9. Install the upper fan shroud to the lower fan shroud.
  10. Install the retaining bolts to the upper and lower fan shrouds.

    11. Tighten
    Tighten the retaining bolts to the upper and lower fan shrouds to 8 N·m (71 lb in).


    Object Number: 160869 Size: SH
  11. Install the upper fan shroud retaining bolts to the top of the radiator.

    12. Tighten
    Tighten the retaining bolts to the upper fan shroud to 8 N·m (71 lb in).

  12. Install the coolant recovery reservoir (Gas Engines) or the surge tank (Diesel Engines).
    13. • For the coolant recovery reservoir (Gas Engines), refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
    • For the surge tank (Diesel Engines), refer to Surge Tank (Diesel) Replacement in Engine Cooling.
  13. Install the air cleaner and the duct. Refer to Air Cleaner Assembly Replacement 4.3L or Air Cleaner Assembly Replacement 5.0/5.7L Air Cleaner Assembly Replacement 6.5L or Air Cleaner Assembly Replacement 7.4L in Engine controls.
  14. Refill the coolant. Refer to Cooling System Draining and Filling in Engine Cooling.