GM Service Manual Online
For 1990-2009 cars only

Radiator Cleaning Charge Air Cooling

Warning: NEVER spray water on a hot heat exchanger. The resulting steam could cause personal injury.

Caution: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

       Note: Remove bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the charge air coolant radiator.

    • Some conditions may require the use of warm water and a mild detergent.
    • Clean the A/C condenser fins.
    • Clean between the A/C condenser and charge air coolant radiator.
    • Clean the charge air coolant radiator cooling fins.
    • Straighten any damaged cooling fins.

Radiator Cleaning LS2

Warning: NEVER spray water on a hot heat exchanger. The resulting steam could cause personal injury.

Caution: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

       Note: Remove bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the radiator.

    • Some conditions may require the use of warm water and a mild detergent.
    • Clean the A/C condenser fins.
    • Clean between the A/C condenser and radiator.
    • Clean the radiator cooling fins.
    • Straighten any damaged cooling fins.

Radiator Cleaning LS7

Warning: NEVER spray water on a hot heat exchanger. The resulting steam could cause personal injury.

Caution: The heat exchanger fins are necessary for good heat transfer. Do not brush the fins. This may cause damage to the fins, reducing heat transfer.

       Note: Remove bugs, leaves, dirt and other debris by blowing compressed air through the engine side of the radiator.

    • Some conditions may require the use of warm water and a mild detergent.
    • Clean the engine oil cooler (EOC) fins.
    • Clean the A/C condenser fins.
    • Clean the radiator cooling fins.
    • Clean between the EOC and the A/C condenser.
    • Clean between the A/C condenser and radiator.
    • Straighten any damaged cooling fins.