GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1291097  Size: SH
  1. Inspect the water pump body for cracks and leaks.
  2. Inspect the water pump bearing for play or abnormal noise.
  3. Inspect the water pump pulley for excessive wear. If the water pump is defective, replace the water pump as a unit.
  4. Warning: Wear safety glasses in order to avoid eye damage.

  5. Clean the mating surfaces of the water pump and the engine block.