OEM 2003 Buick Rendezvous Oxygen Sensor

2003 Buick Rendezvous Parts Questions & Experts Answers

• Q: How to Properly Replace a Heated Oxygen Sensor (HO2S) 1 on 2003 Buick Rendezvous?

  A: Before starting replacement work ensure the pigtail and connector stay attached to the sensor because their removal could lead to functional issues with the system. The ho2s and o2s require careful handling through cleaning of their in-line electrical connector and louvered end while keeping these elements free of dirt and grease and using no cleaning solvents. Start by cutting the power connection after which you should lift up the vehicle. Handle the heated Oxygen Sensor (HO2S) with careful handension while you remove it from the Exhaust Manifold/pipe because rough handling can break the threads. The operation will be difficult at temperatures below 48 °c (120 °F). Follow these installation steps by placing the heated Oxygen Sensor (HO2S) in the right position while applying special anti-seize compound to the threads; service sensors begin with a factory coating but sensors of reuse require an application of anti-seize compound p/n 5613695 or equivalent. Before reinstalling the ho2s tighten it to 41 n·m (30 lb ft) and then lower the vehicle before connecting the electrical connector.