Avalanche 1500 4WD V8-5.3L (2007)
6. Ensure that the exhaust seal is seated in the catalytic converter.
7. Install the catalytic converter to exhaust manifold nuts. (1500 series shown, 2500 series similar).
Tighten the nuts to 50 N.m (37 lb ft).
8. Lower the vehicle.
9. Install the spark plugs. Refer to Spark Plug Replacement.
10. Install the ignition coils. Refer to Ignition Coil Replacement.
