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Cadillac DeVille Electrical/Lighting

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  • Hello this is my first post and would like to know the proper way to check and clear codes from obd 2 monitoring system please, Thank you for your time . Robert . P.S. I do know how to push the off and warmer buttons to turn on system but then i do not know how to read the system from there or how to clear them . :confuse:
  • vic8vic8 Posts: 13
    After holding down on the warmer and off buttons,the computer will open up and start running the various system circuits,it will stop on any trouble code that is currently present for a few seconds and then continue on,until it runs the whole system.
    The system will also stop on trouble codes that are history.
    Be sure to write down the current number code,so you will be able to look it up,and find which circuit the trouble is in.Once you find the problem and repair it,you will have to clear that code,by either using a code scanner,which you probaly dont have or by disconnecting the positive lead on the battery for five minutes and then reconnecting.If the code comes back again you have not corrected the problem and if it dont come back I would consider your repair a success.You will have to reset certain settings,like the clock and radio settings.To find a list of trouble codes for your caddy,enter in keyword 1997 cadillac Deville trouble codes,ther you will find the code lists.
  • Thank you so much one more thing if the car runs a complete scan does it end up pcm? on screen if so i have figured it out Thanks in advance for all the help Robert. :)
  • From experience, you must reset the computer memory. Your code is still in your computer memory.

    Steps to Reset:
    Turn ignition key to on position (do not start car)
    Disconnect positive battery terminal while key is in on position (instrument panel lights on only).
    Wait a couple of minutes.
    Turn key off.
    Reconnect positive battery terminal.
    *Note This Process Erases All Trouble Codes! But keep in mind they will come back if the condition is not fixed.
  • vic8vic8 Posts: 13
    Yes,I have the same PCM? on my 1997 Deville after running the system.I do not know what the question mark represents,I'm trying to find out,But I did repair my problem,which was an Oxygen sensor (trouble code P1139)which I did replace. If I was unable to access the on board
    computer and find the trouble code,that was causing the problem,I would of been at the mercy of my Cadillac dealer and you know what that would of cost. ;)
  • vic8vic8 Posts: 13
    Hi
    I have a 1997 Caddy Deville,in your last message you said you replaced the plugs and wires.I have to change mine too.
    My question is,are 4 of your plugs positioned in the rear of the engine,close to the fire wall?If they are can you tell me,the best way to take them out.Thanks for your time!
  • Thank you for your time God Bless.
  • kirainmtkirainmt Posts: 4
    Yes, 4 of the spark plugs are next to the firewall. We used a rachet wrench don'y remember the sixe off hand, it is a very small space so you might have to turn them by hand to get them out. It takes some time to get them out. My engine hesitation has come back in the last week or so, do you have this problem also?
  • This is a 95 Cadillac DeVille with the 4.9L V8 that was running well and then one morning it would not start. It will turn over strong when the key is turned but it won't fire. Pulled the fuel line just before the fuel regulator and the fuel comes out strong when turning key to start. Checked the fuses that had to do with the ignition and fuel injectors and they check good. I pulled the plastic cover off the distributor and found what looked like the coil. Checked the plug and contacts and there is no voltage to the coil when turning key to start position. I went ahead and made a guess to change out the ignition module inside the distributor housing and that did not fix it. I have checked the codes and the codes I have recorded are as follows:
    P052
    P065
    I039
    I052

    Could someone give me an idea where to go from here????
    Thanks in advance for any ideas.
  • stevewhitstevewhit Posts: 4
    On our '91 it was the security key system. Had a broken wire going into the switch assembly. Had to read the key resistor with an ohm meter to get the value. Hooked up a set of resistors to match that value to the cable going to the computer. Works like a champ. Other fix is a complete new switch assembly, as per the dealer. The indication was the "security" light was on. Hope this is not your problem.
    Best
    Steve
  • geo9geo9 Posts: 739
    You should look for a corroded or loose battery
    cable end...............
  • tercloterclo Posts: 3
    I HAD THE SAME TROUBLE THAT YOU HAVE. WHAT IS GOING ON IS THAT THE SHOCKS ARE BAD IN EITHER THE REAR OR THE FRONT. WHAT YOU WILL HAVE TO DO IT REPLACE THE AIRRIDE SHOCKS. HOWEVER, THE REPLACEMENT SHOCKS COST $506.00. THE GOOD NEWS IS THAT YOU CAN REPLACE THEM WITH ANY AIRRIDE SHOCK THAT YOU WISH (AFTERMARKET SHOCKS) WHICH WILL COST ABOUT $85.00. ALL THAT HAPPENS IS THAT THE MESSAGE WILL COME UP ON YOUR MESSAGE READOUT INSIDE, BUT THEN ALL YOU HAVE TO DO IS HIT THE INFORMATION BAR EACH TIME YOU START THE CAR. IT IS VERY SIMPLE. THE HOOKUP TO THE AIRRIDE SHOCKS TO THE COMPUTER IS NOT REQUIRED ON THE COMPUTER AND WILL NOT INTERFERE WITH THE CAR'S PERFORMANCE. I HAD THIS PROBLEM AND SOLVED IT. TERCLO
  • smoogiessmoogies Posts: 2
    Hello I was looking for info about the Service Ride Control msg and I read yours. I knew the rear shocks had to be replaced but we could only find new ones for $1000. The used ones we purchased were wrong. You said you could use aftermarket ones. Could you tell me the name brande of the ones you boguth so I can purchase them. We've bought several now and I need to be sure I'm getting the right ones. Thanks so much.
  • tercloterclo Posts: 3
    HI. IN RESPONSE TO YOUR QUERY. I BELIEVE THAT I USED AUTO ZONE OR ONE OF THE CHEAPER OUTLET STORES. GOING TO THE DEALER IS NOT UP FOR OPTION, WAY TO EXPENSIVE. ALL THAT IS REQUIRED IS A GOOD RIDING AIR SHOCK, MAYBE IN THE 75.00 TO 150.00 DOLLAR AREA. YOU SHOULD BE ABLE TO DOWNLOAD A PICTURE OF THE SHOCK OFF INTERNET AND THIS WILL GIVE THE GUY AT THE STORE SOME IDEA AS TO WHAT YOU WANT. ALSO, HE SHOULD BE ABLE TO CROSS REFERENCE IN HIS BOOKS AND FIX YOU UP WITHOUT ANY PROBLEM. ONE THING YOU MUST REMEMBER IS THAT THE SHOCK YOU ARE REPLACING NEED NOT BE THE EXACT ONE THAT IS ALREADY THERE. JUST GET A GOOD RIDING AIR SHOCK OF ANY BRAND. HOPE THIS HELPS YA. REGARDS, TERRY. ONE MORE THING. THERE IS NO REPLACEMENT FOR THE SHOCK THAT WILL HOOK UP TO YOUR COMPUTER IN THE CAR, GM CHANGED ALL THAT. JUST A GOOD AIR RIDING SHOCK IS ALL THAT IS REQUIRED.
  • smoogiessmoogies Posts: 2
    Thank You very much for your response. I manage a used car lot in Nova Scotia and we've been trying to get this problem fixed. We didn't really want to spend the $1000 per shock so this is a big help. Thanks again for a speedy response.
  • geo9geo9 Posts: 739
    Check out Arnott suspension parts or Boston struts.
    Much cheaper than the $pendy active GM OE struts.
    Ask over at http://www.caddyinfo.com for links and
    more info.................
  • jdobbsjdobbs Posts: 2
    YOU CAN GET RID OF THE CODES STARTINT WITH THE WARM AND OFF BUTTON BUT WHY DON'T YOU TRY JUST DISCONNECTING THE POSITIVE CABLE FROM YOUR BATTERY FOR ABOUT FIVE OR SIX MINUTES THEN HOOK IT UP AGAIN!
  • 04cad04cad Posts: 131
    Does anyone know if there is an aftermarket conversion to change the annoying horn honk when locking the doors with the remote to a less offensive "chirp"? When I have the horn honk enabled, the horn honks on the first push to let me know they locked. My 2006 Chevy Silverado does not honk the first push, only on the second push, so if you are at a motel late at night, or somewhere you don't want to bother people, you can push it once to lock it without a honk disturbing everyone nearby. As far as I can tell with the DeVille, it is either on (honks on first push) or off (doesn't honk ever). Oh I forgot to mention the only positives of the horn honking instead of a chirp noise is the couple of times in Disney parking lots I have toyed with people trying to find their vehicle by pushing their remotes and listening for the horn, one young couple laughed that maybe they should take the Caddy instead of their vehicle. Thanks
  • geo9geo9 Posts: 739
    04............My 03 Deville has a setting on the Driver
    Info. center stating if you want the horn to sound upon
    locking the doors with the remote or not.

    I can only assume a 04 is the same? Have you checked you
    DIC options?
  • bremertongbremertong Posts: 436
    Believe there is a section in the owners manual that will show the options for locking and the horn. If unable to locate there suggest you contact onstar center during the week and daytime hours as they will often transfer you to a dealership service department that will answer your question. I do not like the horn sound on locking and have programed it out, just don't remember what I did, was two years ago when I got the car. I like the idea of a chirp instead and if you find out how to do this will appreciate
    your posting here. My car is a 2004 Deville.
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