new 02 deville transaxle and gas mileage issue.
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, new 02 deville transaxle and gas mileage issue. in Past Cadillac Vehicle Discussion; Recently a new transaxle, water pump and rear main seal were installed in my 02 DHS at a Cad dealer. ...
  1. #1
    misterlac is offline Cadillac Owners Member
    Automobile(s): Deville DHS
    Join Date
    Oct 2011
    Location
    Pac. Northwest.
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    new 02 deville transaxle and gas mileage issue.

    Recently a new transaxle, water pump and rear main seal were installed in my 02 DHS at a Cad dealer. Since then the gas mileage has dropped to around 11 MPG city from 17. Also the motor is considerably more noisy, not exhaust, but engine, prior to this the engine was so quiet you could be standing next to it and not hear it run, The mechanics aren't providing answers or solutions. Any ideas would be greatly appreciated. Thanks.

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: new 02 deville transaxle and gas mileage issue.

    Hi...................................Welcome Aboard !!!!!

    Your original gas mileage and quietness were correct. The install dealer needs to correct THEIR mistakes. At this point, any Internet guess on what's wrong is just that - an uneducated guess.

    Look for the Cadillac Customer Service forum in this site............

  4. #3
    misterlac is offline Cadillac Owners Member
    Automobile(s): Deville DHS
    Join Date
    Oct 2011
    Location
    Pac. Northwest.
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    Thread Starter

    Re: new 02 deville transaxle and gas mileage issue.

    Thank you. I've been lurking for years. I've owned 9 Cadillacs over the past 25 years. Cadillacforums has been a source of valuable information that has helped understand, and sometimes resolve issues I've encountered with a variety of Cadillac models. Thanks for pointing me in the right direction.

  5. #4
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Jun 2004
    Location
    Woodstock Ill.
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    66
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    74,446

    Re: new 02 deville transaxle and gas mileage issue.

    The install dealer needs to correct THEIR mistakes.


    Take it back and don't take no for an answer.

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