GM Service Manual Online
For 1990-2009 cars only

Cleaning Procedure


    Object Number: 1351825  Size: SH
  1. Clean the engine coolant crossover (308) and water outlet (311) in solvent.
  2. Caution: Refer to Safety Glasses Caution in the Preface section.

  3. Dry the components with compressed air.

Inspection Procedure


    Object Number: 1351825  Size: SH
  1. Inspect the engine coolant crossover (308) for the following conditions:
  2. • Corrosion or damage to the gasket sealing surfaces
    • Corrosion or damage to the thermostat bypass hose fitting
    • Corrosion or damage to the threads of the water outlet
  3. Inspect the water outlet (311) for corrosion or damage.
  4. Repair or replace the engine coolant crossover and/or water outlet, as necessary.