Yukon 4WD V8-5.3L (2008)
Notice: Refer to Fastener Notice .
3. Install the HO2S's (1 and 4) to the catalytic converter assembly.
Tighten the sensors to 42 N.m (31 lb ft).
4. Install the NEW exhaust seal (3) as required.
5. Slide the catalytic converter hanger (1) into the hanger bracket.
6. Install the catalytic converter to the exhaust manifold studs.
7. Install the catalytic converter to exhaust manifold nuts (2).
Tighten the nuts to 50 N.m (37 lb ft).
8. Connect the left rear HO2S electrical connector to the engine wiring harness electrical connector (3).
9. Install the left rear CPA retainer (1).
