GM Service Manual Online
For 1990-2009 cars only

Water Pump Installation L98, LS2

    Notice: DO NOT use cooling system seal tabs, or similar compounds, unless otherwise instructed. The use of cooling system seal tabs, or similar compounds, may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.

    Important: Ensure all mating surfaces are clean and free of grease.


    Object Number: 1954195  Size: SH
  1. Insert two retaining bolts (1) at each end of the pump, place the new gasket of the bolts and use this as a guide to install the pump.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install and tighten the remaining bolts.
  4. Tighten
    Tighten the water pump pulley bolts to 25 N·m (18 lb ft).

Water Pump Installation LS3


    Object Number: 1704622  Size: SH

    Notice: DO NOT use cooling system seal tabs, or similar compounds, unless otherwise instructed. The use of cooling system seal tabs, or similar compounds, may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.

    Important: All gasket surfaces are to be free of oil or other foreign material during assembly.

  1. Install the water pump (1) and NEW gaskets (2).
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the water pump bolts (3).
  4. Tighten

    1. Tighten the water pump bolts a first pass to 15 N·m (11 lb ft).
    2. Tighten the water pump bolts a final pass to 30 N·m (22 lb ft).