2000 sts Tranny
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 2000 sts Tranny in Past Cadillac Vehicle Discussion; Not sure what to replace,the last couple of times I've driven the car it seems to have gone into limp ...
  1. #1
    rorman69 is offline Cadillac Owners Member
    Automobile(s): Cadillac
    Join Date
    Sep 2008
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    2000 sts Tranny

    Not sure what to replace,the last couple of times I've driven the car it seems to have gone into limp mode(i think thats what its called)it won't come out of 2nd gear.Also the speedometer goes all haywire reading 0 and sometimes reads wrong speed.

    Codes-U1016 history
    Codes-P0446

    Any help would be great,Thanks in advance

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a sound system
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: 2000 sts Tranny

    P0446 is EVAP system control valve operation. Possible vacuum leak and emissions test failure. Nothing to do with the transmission.

    U1016 is a loss of data communication with the PCM. If its' history, don't sweat it.

    Chances are the VSS (Vehicle Speed Sensor) is failing, but that should set a code also. It's no fun to replace. www.rockauto.com. You go in through the RF wheelwell and the sensor is bolted into the top of the transmission right axle output casting.

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