GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1308004  Size: SH
  1. Install the coolant crossover pipe (305) and NEW O-ring seals (304).
  2. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1197326  Size: SH
  3. Install the thermostat (311), NEW O-ring (312), housing (313) and bolts (314). Align the notch in the housing with the alignment flange of the thermostat.
  4. Tighten
    Tighten the bolts to 12 N·m (106 lb in).

  5. Install the coolant temperature sensor (CTS) (717) and NEW O-ring (716).
  6. Tighten
    Tighten the sensor to 18 N·m (13 lb ft).

  7. Install the studs (603).
  8. Tighten
    Tighten the studs to 10 N·m (88 lb in).

  9. Install the exhaust gas recirculation (EGR) valve (601), NEW gasket (602) and nuts (600).
  10. Tighten
    Tighten the nuts to 22 N·m (16 lb ft).


    Object Number: 897111  Size: SH
  11. Install NEW gaskets (306 and 307), housing (308), bolts (309) and nuts (310).
  12. Tighten
    Tighten the nuts and bolts to 22 N·m (16 lb ft).