OEM 2002 Cadillac DeVille Oxygen Sensor

2002 Cadillac DeVille Parts Questions & Experts Answers

• Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on 2002 Cadillac DeVille?

  A: The replacement of heated Oxygen Sensor (HO2S) bank 1 sensor 1 becomes possible only when the engine reaches a temperature of 48°c (120°F) or higher. Anti-seize compound p/n 5613695 should be applied to threaded sensor areas when using a previously recycled sensor because service sensor replacements arrive with factory coating. When working on replacements start by lifting the vehicle using a jack before securing the powertrain frame at its rear. Lower the frame by no more than 76 mm (3 inches) after removing the four rear frame bolts. Start by unplugging the rear Oxygen Sensor electric connector then extract the sensor from the rear Exhaust Manifold location. To install the rear Oxygen Sensor simply guide it into the Exhaust Manifold while applying 41 n.m (30 lb ft) of torque. Connect the rear Oxygen Sensor electrical connector, lift the vehicle frame, reinstall the four rear frame bolts at 100 n.m (74 lb ft) torque before lowering the vehicle.