GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1578563  Size: SH
  1. Apply sealer GM P/N 12346004 (Canadian P/N 1095380), or equivalent to the engine block heater.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the engine block heater into the engine block.
  4. Tighten
    Tighten engine block heater to 50 N·m (37 lb ft).