Impala V8-5.3L (2008)
1.
Raise and support the vehicle.
2.
Inspect the heated oxygen sensor bank 1 sensor 2 by pulling back the oxygen sensor protective sleeve (1). The wires should be the following
colors:
-
Delphi P/N 12570149 - Used on Model Year 2007, Brown (2), Purple (1) and Tan (1).
-
Denso P/N 12608662 - Used on Model Year 2008, Black (2), White (1), and Blue (1).
3.
If the inspection identifies that the vehicle was built with the incorrect sensor, replace bank 1 sensor 2 with the correct sensor as mentioned above.
Refer to step 5 for the sensor replacement procedure, if necessary.
4.
If the vehicle was built with the correct sensor, ensure that the protective sleeve is restored to its original position and lower the vehicle.
5.
Remove the connector position assurance (CPA) retainer.
6.
Disconnect the bank 1 sensor 2 electrical connector.
7.
Remove the sensor from the catalytic converter.
8.
Install the correct sensor as mentioned above to the catalytic converter.
Tighten
Tighten the sensor to 42 N.m (31 lb-ft).
9.
Connect the bank 1 sensor 2 electrical connector.
10.
Install the CPA retainer.
11.
Lower the vehicle.
Claim Information
For vehicles repaired under this service update, use the table.
