2003 Buick Rendezvous Logo
Posted on Apr 05, 2012
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How to change the02 sensors on a 2003 buick rendevzous

Engine light on want to change 02 sensors

  • Marvin
    Marvin Apr 05, 2012

    Do not replace the sensors until I look at the code, it very rarely that these sensors fail. PLease post the code you got on the test.

  • Howard Pfeiffer
    Howard Pfeiffer Apr 06, 2012

    You can disconnect either battery post to get the same result...Many old school mechanics recommend disconnecting the positive side for safety.

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1 Answer

Howard Pfeiffer

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  • Buick Master 1,249 Answers
  • Posted on Apr 05, 2012
Howard Pfeiffer
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The O2 sensor on your Buick is located on the rear (under windshield cowl side of your exhaust manifold...You might be able to spray injector cleaner on it after removal...use PB Blaster to lubricate before removing the nut...also have you tried running some gas tank fuel injector cleaner in your gas tank recently? Sometimes this will help the sensor to work properly. To clear your "check engine light" you need to disconnect the positive side of your battery cable for about 15 minutes, then reconnect...the light should stay off if all is OK...Hope this helps.

  • 1 more comment 
  • Marvin
    Marvin Apr 05, 2012

    YOU NEVER DISCONNECT THE POSITIVBE CABLE OF THE BATTERY!!! ALWAYS THE NEGATIVE. WHO TOLD YOU THIS?

  • Stacy Turner
    Stacy Turner Aug 10, 2021

    And there are TWO oxygen sensors in a Rendezvous, an upstream and a downstream. If you are going to buy the part yourself, that's what they are called. And they are actually both the exact same part, but one has a longer cord (cannot remember which one needs the longer cord).

    Just make sure to double check the actual connectors on the sensors in your vehicle before ordering. Some have female connectors, some have male, so you will find several O2 sensors that "work" for your Rendezvous, but only visually confirming the connector type in yours will tell you which one is the RIGHT sensor for yours.

  • Anonymous Aug 10, 2021

    you have sensor 1 and or sensor 2 one above the cat converter one below [sen2] but they are not the same one is ho2[heated] --other o2 your also answering archive questions this one is 9yrs old

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1 Related Answer

Anonymous

  • 534 Answers
  • Posted on Jul 10, 2009

SOURCE: 2003 buick rendezvous back up sensors not working

Check the operation of the transmission 'reverse gear select' sensor switch.

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3helpful
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Engine light came on - yellow. Code: P0134 02

there is either a problem with the wiring going to the front oxygen sensor, or with the oxygen sensor itself. good luck!
1helpful
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Need to change O2 sensor check engine light wont go off

Did you change the 02 sensor? The back one after the converter? If so, stop by a dealer, it may need to be reset.The back 02 is the one that trips the light. Keep that in mind.
1helpful
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Light on dash states service engine soon

replace the 02 sensor and the light will go off.
4helpful
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2003 Buick Regal Service Engine Soon light.

The error that I'm showing for error code P1133 is 
P1133 Heated Oxygen Sensor (HO2S) insufficient switching bank 1 sensor 1(Rear Bank).  I would suggest having both of your Oxygen Sensors replaced if you haven't already had that done.  Hope this helps.  Thanks for an honest rating and for using FixYa.
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