CTS V6-3.2L VIN N (2003)
4. On the bottom side of the primary vent hose adapter, enlarge the two existing 1 mm (.04 in) holes (13) to 4 mm (0.2 in). Ensure all debris is
removed.
5. Install new seal (15) on the bottom side of the primary vent hose adapter.
6. On each of the fresh air (outboard hoses (14)), measure and place a mark 38 mm (1.5 in) back from the end of each hose.
7. At each mark, cut through the hose. Ensure all debris is removed.
8. Connect and clamp the inboard hoses (dirty air and evaporative emission (EVAP) canister purge valve vacuum hoses) to the primary engine PCV
vent hose adapter.
9. With the label side down, use the two clamps to attach the two tubes of the new secondary engine PCV vent hose adapter to the two fresh air
(outboard) hoses.
10. Install the new secondary engine PCV vent hose adapter to the back of the throttle body and intake plenum.
11. Install the primary hose adapter to the new secondary hose adapter. Ensure the secondary adapter hoses lay on top of the primary adapter.
12. Ensure the primary hose adapter (with the enlarged holes and new seal) is positioned over the intake plenum opening.
13. Over the hoses and tubes of both adapters, install the new shield to the intake plenum.
14. Install the three new screws securing the new shield to the intake plenum.
Tighten
Tighten the screws to 8 Nm (71 lb in).
