2001 Deville Gas Cap Light - Page 2
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, 2001 Deville Gas Cap Light in Past Cadillac Vehicle Discussion; Hey guys I am having the same issue, i replaced the gas cap and cleared the codes. For a couple ...
  1. #16
    Berat is offline Cadillac Owners Member
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    Re: 2001 Cadillac Deville Gas Cap Light

    Hey guys I am having the same issue, i replaced the gas cap and cleared the codes. For a couple of days it was fine, but the msg appeared again. I read earlier in the forum that it might be more complicated to take care of this issue, so what should be my next step. I cant seem to find the recall for 2001, however i did see the recall for the 02+ models.

  2. #17
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: 2001 Cadillac Deville Gas Cap Light

    All I got was an SES light and then looked at the code, whatever it was. That's how I knew.

    No message about gas caps

    Quote Originally Posted by Ranger View Post
    It's there. It will appear as a message on the bottom of the DIC when and if the conditions occur.
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  3. #18
    Berat is offline Cadillac Owners Member
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    Re: 2001 Cadillac Deville Gas Cap Light

    The code I got when the "check gas cap" msg came in was P0440 which was the EVAP system or whatever. If this was recalled shouldn't they fix this?

  4. #19
    Ranger's Avatar
    Ranger is online now Cadillac Owners Member
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    Re: 2001 Cadillac Deville Gas Cap Light

    It depends on what the problem is. The EVAP system includes much more than just the tank pressure sensor. If you are getting a P0440 code, you have to check out the entire system and find the problem. Most likely a leak somewhere.

  5. #20
    codewize's Avatar
    codewize is offline Cadillac Owners Master
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    Re: 2001 Cadillac Deville Gas Cap Light

    That's the code I got but no message, just an SES light. After reading that it indicated a possible leak in the EVAP system I remembered the gas cap being a possible culprit. I took it off and put it back on making sure it was tight. All has been well ever since.
    Ownership:
    91 d'Elegance 350
    02 DTS
    01 DTS:
    Custom installed Volant CAI
    Custom PCM
    Body color engine components
    Cruiser Alloy wheels
    EBC brakes and rotors
    Eibach springs
    Corsa exhaust
    Sportwing Spoiler
    Semi-custom interior
    Custom quad Hi-Beams
    Future Plans: More interior work.


    Memberships:
    National and regional Cadillac & LaSalle Club
    Proud Volunteer - Northstar Tuning Project
    Guinness World Records - Largest Cadillac Parade

    ----------------------------

  6. #21
    DIS DTS is offline Cadillac Owners Fanatic
    Automobile(s): 2003 DTS 200k miles
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    Re: 2001 Cadillac Deville Gas Cap Light

    My 03 DTS has the code P0440 and the gas cap message. Cap seems fine. Is the recall mentioned in effect for the 03? Could this be related to code
    P0463? This code is for the fuel level sensor. My gas gauge jumps around after about a 1/4 of tank. I also had P0507 and P1106. I cleaned the TB cleared the codes and drove 400 miles in two days and those 2 codes didn't reset yet.

  7. #22
    danb_1 is offline Cadillac Owners Member
    Automobile(s): 2003 Deville
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    Re: 2001 Cadillac Deville Gas Cap Light

    How can you reset the code if the check gas cap light comes on? To see if there is still a problem after cleaning, etc.

  8. #23
    basscatt's Avatar
    basscatt is offline Cadillac Owners Master
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    Re: 2001 Cadillac Deville Gas Cap Light

    Quote Originally Posted by danb_1 View Post
    How can you reset the code if the check gas cap light comes on? To see if there is still a problem after cleaning, etc.
    --------------------------------
    are you getting a CODE - as in DTC -

    or are you getting a MESSAGE on the DIC -

    if it is the MESSAGE - you don't/can't reset it -
    when you FIX the problem - the MESSAGE will go away -

    ---------------------
    if you have checked the cap - and it is clean and tight -

    my guess is that your gas filler neck is rusting out -
    and you have tiny pinholes in it -

    if that IS the case - the only solution is to replace the filler neck -

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