Oxygen Sensors: Notes
WARNING: This page is about a different car, the 2002 Pontiac Sunfire and 2002 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Oxygen (O2) sensor is equipped with a permanent pigtail which must remain intact when removing O2 sensor. Damage to or removal of pigtail will affect O2 sensor operation.