GM Service Manual Online
For 1990-2009 cars only

Radiator Hose Replacement 2.2L

Removal 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.

  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Drain and recover the coolant to a level below the hose being removed. Refer to Cooling System Draining and Filling .

  3. Object Number: 25810  Size: SH
  4. Remove the radiator inlet hose and the clamps (1) from the radiator and the coolant outlet.
  5. Disconnect the radiator outlet hose (2) and the clamps from the following places:
  6. • The radiator
    • The water pump
    • The radiator surge tank
  7. Remove the radiator outlet hose.

Installation Procedure

    Notice: Make sure the reference marks on the hoses and the radiator are lined up. A twist on the hose would place strain on the radiator fitting which could cause the fitting to crack or break.


    Object Number: 25810  Size: SH
  1. Install the radiator outlet hose and the clamps (2) to the following places:
  2. • The radiator
    • The water pump
    • The radiator surge tank
  3. Install the radiator inlet hose and the clamp (1) to the radiator and the coolant outlet.
  4. Connect the negative battery cable.
  5. Tighten
    Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

    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.

  6. Refill the radiator with coolant. Refer to Cooling System Draining and Filling .
  7. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.

Radiator Hose Replacement 3.1L

Removal 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.

  1. Disconnect the negative battery cable. Refer to

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

    in General Information.
  2. Drain and recover the coolant to a level below the hose being removed. Refer to Cooling System Draining and Filling .

  3. Object Number: 25990  Size: SH
  4. Remove the radiator inlet hose (2) and the clamps (1) from the radiator and the coolant outlet.
  5. Disconnect the radiator outlet hose (3) and the clamps (1) from the following places:
  6. • The radiator
    • The water pump
    • The radiator surge tank
  7. Remove the radiator outlet hose.

Installation Procedure

    Notice: Make sure the reference marks on the hoses and the radiator are lined up. A twist on the hose would place strain on the radiator fitting which could cause the fitting to crack or break.


    Object Number: 25990  Size: SH
  1. Install the radiator outlet hose (3) and the clamps (1) to the following places:
  2. • The radiator
    • The water pump
    • The radiator surge tank
  3. Install the radiator inlet hose (2) and the clamps (1) to the radiator and the coolant outlet.
  4. Connect the negative battery cable.
  5. Tighten
    Tighten the negative battery cable bolt to 15 N·m (11 lb ft).

    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.

  6. Refill the radiator with coolant. Refer to Cooling System Draining and Filling .
  7. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.