GM Service Manual Online
For 1990-2009 cars only

    Object Number: 59782  Size: SH
  1. Install the seals onto the thermostats.
  2. • The seals have a split, inner edge, which install over the flange on the thermostats.
    • The seals have a bead on the surface that faces the thermostat housing.
  3. Install the thermostats to the coolant crossover.

  4. Object Number: 64991  Size: SH
  5. Install the thermostat housing
  6. Install the bolts/studs.
  7. Tighten
    Tighten the bolts/studs to 42 N·m (31 lb ft).

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.