The oxygen sensor on a vehicle will need to be changed about every 100,000 miles for the newer vehicles. An older vehicle might need this part to be changed more often. If this part is working properly, there is no need to change it, no matter how many miles are driven.
If the vehicle was built with an oxygen sensor, you will need an oxygen sensor.
Need to know what code(s) were set and which O2 sensor you changed in order to help you.
The O2 sensor is in the rear exhaust maniford. It can be changed from above, but you'll need to use a mirror or work by braille.
You need to take a wrench to loosen the oxygen sensor, then you will need to disconnect the cord. Once you have done that you will then pull out the old oxygen sensor.
DTC P0141 is: Oxygen Sensor Heater Cuircuit Malfunction (Bank 1 Sensor 2). The Downstream O2 Sensor(aft of the Catalytic Converter) most probably need to be changed.....
You can not successfully clean an oxygen sensor. You need to replace it.
You need to get a die that fits. Probably cheaper to buy the sensor
code 33 is for the exhaust gas sensor (also known as the O2 sensor) if the computer is coding a 33 it does need to be changed. You can also uplug the sensor at the connector and if the truck runs better that's a good indication that the sensor is bad. The connector is on the passanger side fender wall with about 3 other connectors and it is on the bottom of the group with 3 wires running to the sensor.
The oxygen sensor on a Buick Rendezvous is located immediately before the converter on the driver's side. You will need either a special socket or a wrench to remove the sensor.
There is a specially made "socket" to remove the oxygen sensor available at most auto supply stores.