GM Service Manual Online
For 1990-2009 cars only

Radiator Outlet Hose Replacement L65

Removal Procedure


    Object Number: 729061  Size: SH
  1. Drain the coolant from the cooling system. Refer to Cooling System Draining and Filling .
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the surge tank outlet hose from the radiator outlet hose.

  4. Object Number: 729059  Size: SH

    Important: Most C/K models use a spring - type clamp at the radiator hose connections. When using this type of clamp, install radiator hoses on dry, non - painted surfaces in order to ensure proper sealing. Reusing the spring - type clamps on aftermarket hoses is not recommended.

  5. Remove the clamps.
  6. Remove the radiator outlet hose from the radiator.
  7. Remove the radiator outlet hose form the water pump.

Installation Procedure


    Object Number: 729059  Size: SH
  1. Install the radiator outlet hose to the water pump.
  2. Install the radiator outlet hose to the radiator.

  3. Object Number: 729061  Size: SH
  4. Install the surge tank outlet hose to the radiator outlet hose.
  5. Lower the vehicle.
  6. Refill the coolant in the cooling system. Refer to Cooling System Draining and Filling .
  7. Start the engine. After the engine reaches normal operating temperature, inspect for coolant leaks.

Radiator Outlet Hose Replacement L18

Removal Procedure

Important: Most truck models use a spring-type clamp at the hose connections. When using this type of clamp, install the radiator hoses on dry, non-painted surfaces in order to ensure proper sealing. Reusing the spring-type clamps on aftermarket hoses is not recommended.


    Object Number: 746710  Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Reposition the hose clamps (4, 6) at the water pump and the radiator.
  4. Remove the outlet hose (5) from the water pump and radiator.

Installation Procedure


    Object Number: 746710  Size: SH
  1. Install the outlet hose (5) to the water pump and radiator.
  2. Position the hose clamps (4, 6) at the water pump and radiator.
  3. Lower the vehicle.
  4. Fill the cooling system. Refer to Cooling System Draining and Filling .