Unsure of what these codes mean, please help!
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, Unsure of what these codes mean, please help! in Past Cadillac Vehicle Discussion; I own a 98 Cadillac Deville, It recently had a hose come loose and it overheated because all of the ...
  1. #1
    davisadavis24 is offline Cadillac Owners Member
    Automobile(s): 1998 Caddilac Deville
    Join Date
    Sep 2013
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    Red face Unsure of what these codes mean, please help!

    I own a 98 Cadillac Deville, It recently had a hose come loose and it overheated because all of the coolant poured out the hose. I'm going to get a coolant flush soon, had a few codes. I looked em up and I know the technical terms for the codes, but I am totally clueless as to what they mean in laymens terms and if they are anything I should worry about. The codes are P1520 transmission range switch circuit and P1522 park/neutral to drive/reverse out high rpm

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  3. #2
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    Re: Unsure of what these codes mean, please help!

    Were the codes Current or History, and does the transmission seem to operate properly now ?? Idle, coast, accelerate, pass, road load, wide open throttle ? If all is good, clear codes and forget it.

    What is transmission fluid life in the DIC ?

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