GM Service Manual Online
For 1990-2009 cars only

    Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 1255565  Size: SH
  1. Inspect the coolant pump body for cracks and leaks.
  2. Inspect the coolant pump bearing for play or abnormal noise.
  3. Inspect the coolant pump pulley for excessive wear. If the coolant pump is defective, replace the coolant pump as a unit.
  4. Clean the mating surfaces of the coolant pump and the engine block.