02 sensors for 2002 ext

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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, 02 sensors for 2002 ext in Cadillac Escalade Forums; I have a 2002 EXT, the service engine soon light came on. We used a Car MD and it said ...
  1. #1
    sandygarland's Avatar
    sandygarland is offline Cadillac Owners Member
    Automobile(s): 2002 EXT
    Join Date
    Apr 2011

    02 sensors for 2002 ext

    I have a 2002 EXT, the service engine soon light came on. We used a Car MD and it said the 02 sensors needed changing. My husband changed 2 of them. Then we found out there are actually 4 of them. Can you tell me the locations of the 4 sensors? Then I can relay the info to my husband.
    I appreciate your help. Sandy

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  3. #2
    luxurylife33's Avatar
    luxurylife33 is offline Cadillac Owners Connoisseur
    Automobile(s): 99 Escalade (sold) 03 Escalade EXT (sold) - 07 Escalade EXT
    Join Date
    Oct 2008
    Long Island

    Re: 02 sensors for 2002 ext

    there are 2 on each side .... one before the cat (#1) and one after (#2)

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