GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2005 🢒 Montana SV6 - AWD 🢒 Engine 🢒 Engine Electrical 🢒 Water Pump Replacement

Removal Procedure

    Object Number: 30978 Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Loosen the water pump pulley bolts.
  3. Remove the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.5L.
  4. Remove the water pump pulley bolts and pulley.

    5. Object Number: 30996 Size: SH
  5. Remove the water pump bolts, pump, and gasket.
  6. Clean the water pump mating surfaces.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 26000 Size: SH
  1. Install the water pump gasket and pump (1).
  2. Install the water pump bolts.

    3. Tighten
    Tighten the bolts to 10 N·m (89 lb in).


    Object Number: 30978 Size: SH
  3. Install the water pump pulley and bolt until snug.
  4. Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 3.5L.
  5. Install the water pump pulley bolts.

    6. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).

  6. Fill the cooling system. Refer to Cooling System Draining and Filling .
  7. Inspect for leaks.