GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2001 🢒 Montana Ext. 🢒 Engine 🢒 Engine Cooling 🢒 Radiator Replacement

Removal Procedure
  1. Remove the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls - 3.4L.
  2. Drain the coolant. Refer to Cooling System Draining and Filling .
  3. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation, and Air Conditioning.
  4. Loosen the bolts which secure the engine mount strut to the strut bracket.
  5. Remove the strut bracket brace bolts from the upper radiator support and reposition the struts and brackets rearward.
  6. Remove the battery. Refer to Battery Replacement in Engine Electrical.
  7. Remove the cooling fan and shroud assembly. Refer to Engine Cooling Fan Replacement .
  8. Remove the lower hose from the radiator. Refer to Radiator Outlet Hose Replacement .
  9. Disconnect the transaxle oil cooler lines from the radiator. Refer to Automatic Transmission Oil Cooler Hose Replacement in Automatic Transaxle - 4T65-E.
  10. Remove the A/C discharge hose from the condenser block.
  11. Remove the inlet tube the connects the condenser to the evaporator.

    12. Object Number: 70049 Size: SH
  12. Remove the radiator/condenser assembly.
  13. Remove the condenser tube bracket bolt.
  14. Remove the mounting bolts which secure the condenser to the radiator.
  15. Remove the condenser from the radiator.

Installation Procedure
  1. Install the condenser to the radiator.

    2. 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.

  2. Install the mounting bolts which secure the condenser to the radiator.

    3. Tighten
    Tighten the bolts to 6 N·m (53 lb in).

  3. Install the condenser tube bracket bolt.

    4. Tighten
    Tighten the bolt to 2.5 N·m (22 lb in).


    Object Number: 70049 Size: SH
  4. Install the radiator/condenser assembly.
  5. Install the inlet tube that connects the condenser to the evaporator, and bolt the tube to the condenser block.

    6. Tighten
    Tighten the bolt to 16 N·m (12 lb ft).

  6. Install the A/C discharge hose and nut to the condenser block.

    7. Tighten
    Tighten the nut to 16 N·m (12 lb ft).

  7. Connect the transaxle oil cooler lines to the radiator. Refer to Automatic Transmission Oil Cooler Hose Replacement in Automatic Transaxle - 4T65-E.
  8. Install the lower hose to the radiator. Refer to Radiator Outlet Hose Replacement .
  9. Install the cooling fan and shroud assembly. Refer to Engine Cooling Fan Replacement .
  10. Reposition the engine mount bracket. Install the strut bracket brace bolts to the upper radiator support.

    11. Tighten
    Tighten the bolts to 28 N·m (21 lb ft).

  11. Install the battery. Refer to Battery Replacement in Engine Electrical.

    12. NOTICE: When adding coolant, it is important that you use GM Goodwrench DEX-COOL® or HAVOLINE® DEX-COOL® coolant. If Coolant other than DEX-COOL® or HAVOLINE® DEX-COOL® is added to the system the engine coolant will require change sooner; at 50 000 km (30,000 mi) or 24 months.

  12. Fill the cooling system. Refer to Cooling System Draining and Filling .
  13. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating, Ventilation, and Air Conditioning.
  14. Install the air cleaner and duct assembly. Refer to Air Cleaner Assembly Replacement in Engine Controls- 3.4L.