GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1871058  Size: SH
  1. Install the NEW thermostat housing assembly O-ring and gasket.

  2. Object Number: 1871057  Size: SH
  3. Install the thermostat housing assembly.
  4. Caution: Refer to Fastener Caution in the Preface section.

  5. Install the thermostat housing assembly bolts and tighten to 10 N·m (89 lb in).

  6. Object Number: 1665644  Size: SH
  7. Install the NEW heater inlet/outlet pipe assembly O-ring and gasket.

  8. Object Number: 946082  Size: SH
  9. Install the heater inlet/outlet pipe assembly.
  10. Install the heater inlet/outlet pipe assembly bolts and tighten to 10 N·m (89 lb in).