With RPO NC8 - California Emissions

1. Install the right exhaust manifold gasket.
2. Install the right exhaust manifold.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the right exhaust manifold studs and nuts.
Tighten the right exhaust manifold studs and nuts to 30 Nm (22 ft. lbs.).
4. Install the right side spark plugs.
Tighten the right side spark plugs to 27 Nm (20 ft. lbs.).





5. Install the fuel injector sight shield cover bracket.
6. Install the fuel injector sight shield cover bracket nuts.
Tighten the fuel injector sight shield bracket nuts to 30 Nm (22 ft. lbs.).





7. Install the right engine lift hook.
8. Install the right engine lift hook nut and bolt.
Tighten the right engine lift hook nut and bolt to 30 Nm (22 ft. lbs.).





9. Install the lower right exhaust manifold heat shield.





10. Install the upper right exhaust manifold heat shield.





11. Install air injection check valve.
12. Install air injection check valve bolts.
Tighten the air injection check valve bolts to 10 Nm (89 inch lbs.).





13. Install vacuum solenoid and lines.
14. Install the vacuum solenoid bolt.
Tighten the vacuum solenoid bolt to 10 Nm (89 inch lbs.).





15. Coat the threads of the heated oxygen sensor with anti-seize compound GM P/N 5613695, or equivalent.
16. Install the heated oxygen sensor.
Tighten the heated oxygen sensor to 42 Nm (31 ft. lbs.).
17. Install the heated oxygen sensor lead.





18. Install air injection pipe.
19. Install air injection pipe assembly nuts.
Tighten the air injection pipe nuts to 10 Nm (89 inch lbs.).

Important: Inspect the EGR outlet pipe for leaks during installation. If leaks are present, replace the EGR adapter assembly.





20. Install the EGR mounting bracket.
21. Install the EGR mounting bracket bolts.
Tighten the EGR mounting bracket bolts to 50 Nm (37 ft. lbs.).
22. Install the EGR inlet pipe to the exhaust manifold.
23. Install the EGR inlet pipe bolt.
Tighten the EGR inlet pipe bolt to 29 Nm (21 ft. lbs.).