Impala V8-5.3L VIN C (2006)
1. If re-installing the old sensor, coat the threads with anti-seize compound P/N 12377953, or equivalent.
2. Install the bank 1 sensor 1 to the exhaust manifold.
NOTE: Refer to Fastener Notice.
Tighten the sensor to 42 N.m (31 lb ft).
3. Connect the bank 1 sensor 1 electrical connector (2).
4. Install the CPA retainer (1).
5. Install the ignition coils.