Sierra 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
1. If necessary, install the oxygen sensors.
1.1. Apply anti-seize compound GM P/N 12377953 or equivalent to the threads of the old oxygen sensors.
1.2. Install the oxygen sensors.
Tighten
Tighten the sensors to 42 Nm (31 lb ft).
2. Install the catalytic convertor.
