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Thread: 2003 CTS auto trans filter (which one?)

  1. #1
    ultra2207 is offline Cadillac Owners Member
    Automobile(s): 2003 CTS
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    2003 CTS auto trans filter (which one?)

    Just bought an '03 CTS. First thing I'm doing is changing all fluids. Want to purchase a new transmission filter but I'm confused. If I look up a replacement on a site such as rock auto it shows that there are a couple of different part numbers for the same brand (mainly looking at AC delco).
    AC Delco part # 96042545 or # 96041844 show that they are both compatible with my '03. Which one is accurate? I would consider other brands as well. Want to get this ordered now so I can get it done. Can anyone give me an exact part number for my '03? Thanks!


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  3. #2
    arogers260's Avatar
    arogers260 is offline Cadillac Owners Enthusiast
    Automobile(s): 2003 CTS Luxury/Sport package
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    I bought mine from oreillys they only have one style I think but pretty much all kits come with the neoprene gaskets unless ordered online. Cadillac told me there is a number above the pan that will tell you which style you need. Guess they made 2 different kinds in 03. Mine wasn't the shallow mount. So see what numbers you have then call Cadillac to see which one you need.

  4. #3
    CTSUK's Avatar
    CTSUK is offline Cadillac Owners Enthusiast
    Automobile(s): 2005 Cadillac CTS 3.6 Sport Luxury
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    Re: 2003 CTS auto trans filter (which one?)

    When ordering parts I would give your vin number to the supplier so they can find the correct fitments for you, nothing worse than opening up the pan to find its a different part!

    Stu

  5. #4
    arogers260's Avatar
    arogers260 is offline Cadillac Owners Enthusiast
    Automobile(s): 2003 CTS Luxury/Sport package
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    When I called and gave my vin they said there is 2 different kinds and the only way they would know is by that number above the pan

  6. #5
    jran0823's Avatar
    jran0823 is offline Cadillac Owners Connoisseur
    Automobile(s): 2003 CTS 1SC Luxury Sport
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    Re: 2003 CTS auto trans filter (which one?)

    They cannot tell you which one you need by the VIN or RPO. There is a tag on the driver's side of the transmission that will tell you. It should read either 3GAG or 3GBG. The 3GAG is the cheap one, which I believe O'reilly's carries. The 3GBG is the more expensive one and I believe it is dealer only for that filter.

  7. #6
    ultra2207 is offline Cadillac Owners Member
    Automobile(s): 2003 CTS
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    So my suspicions were correct, there are two different ones. Glad I didn't place the order! I appreciate it guys!

  8. #7
    ultra2207 is offline Cadillac Owners Member
    Automobile(s): 2003 CTS
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    Valparaiso, IN
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    Just looked, 3GBG. Thanks again!


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