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Cadillac DeVille Electrical/Lighting

151 messages,  Last post on Oct 27, 2009 at 1:37 PM

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What is this discussion about? Cadillac DeVille, Lights, Electrical, Sedan

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#80 of 151 Interior Lighting Goes Out and no trunk light by avidus Aug 19, 2007 (6:18 pm)
Every now and then, like months apart, the interior lights, cigarette lighters, and trunk light stop working. We have checked all the fuses and they are all fine..but cant find out why I suddenly lose the inside electrical overhead lights, cig lighters and trunk light. Then, as strangely as they went out, they come back on. But it's a real pain when they go out..no lights at night, no power in the outlets and no trunk light....ARGH........any clues out there??? Replies to this message: amkdevile (Aug 20, 2007 1:59 am) avidus (Aug 20, 2007 4:15 am) bolivar (Aug 20, 2007 11:18 am)
#81 of 151 Re: Interior Lighting Goes Out and no trunk light [avidus] by amkdevile Aug 20, 2007 (1:59 am)
Replying to: avidus (Aug 19, 2007 6:18 pm) If your car has battery run down protection, it might be turning them off to save the battery. I've had my trunk light do this when the trunk was open for a long time. Then it comes back on a little later. 2005 Deville. Replies to this message: avidus (Aug 20, 2007 4:15 am) bolivar (Aug 20, 2007 11:18 am)
#82 of 151 Re: Interior Lighting Goes Out and no trunk light [amkdevile] by avidus Aug 20, 2007 (4:15 am)
Replying to: amkdevile (Aug 20, 2007 1:59 am) No, I wish it was that simple. The lights will go out for months at a time and wont come back on at all, except bu surprise, the whole thing works great, so nobody can figure it out. It must be a short somewhere but dont know where.If I plug in a jumper box into the cigarette lighter, then the lights work, so they must all be on the same circuit and not getting power from the car battery. But I have checked the fuses and they are all fine. So I just dont know... Replies to this message: bolivar (Aug 20, 2007 11:18 am)
#83 of 151 Re: Interior Lighting Goes Out and no trunk light [avidus] by bolivar Aug 20, 2007 (11:18 am)
Replying to: avidus (Aug 20, 2007 4:15 am) Has someone put a trailer light package on the car?   Has someone put an after market radio on the car?    Has someone put an after market alarm system on the car?   Has someone put a remote start system on the car?   Any of these has a high possibility of messing up the electronics on a Cadillac, or any other vehicle.
#84 of 151 Re: help please..... [etbartley] by etbartley Sep 04, 2007 (5:25 pm)
Replying to: etbartley (Jul 24, 2007 10:29 pm) Just an FYI - a few days after posting this I found out all of my problems were linked to corrosion on the positive (red) battery terminal. I took it to a service station and they replaced the tip (not the entire cable) and it's been working fine ever since! Of course, I have a (second) new battery now, one w/o a dead cell. I wonder if this problem killed the first new battery I got. Well, I hope this info helps someone if they have a similar problem!
#85 of 151 97 caddy interior lights by medic2586 Sep 09, 2007 (11:03 am)
97 caddy with twilight sensor....interior lights started coming on when twilight would turn on headlights. truned twilight off and fixed problem until last night..hit a bump and interiors are on anytime driving...can't drive like this with interiors on at night....several mechanics and dealership have checked this to no avail....any help or ideas???? Replies to this message: bolivar (Sep 09, 2007 12:55 pm) sls002 (Sep 09, 2007 4:06 pm)
#86 of 151 Re: 97 caddy interior lights [medic2586] by bolivar Sep 09, 2007 (12:55 pm)
Replying to: medic2586 (Sep 09, 2007 11:03 am) On my 1995, under warranty (factory extended), it took three tries by service before they successfully fixed this.   They replaced, per receipt, a relay, a module, etc in the attempts. I think the final fix was a short or bad connector, not a separate piece of hardware.   I didn't ask much about it, just kept taking it back. And on the last trip home, after 30 minutes on my driveway, I saw green fluid. Took it right back and got a replacement water pump in less than 2 hours. Had it in stock, knew what the problem was, quick replacement - this makes me think lots of them leak.   And, you have to disconnect the battery to stop the interior lights, until they are fixed. Replies to this message: sls002 (Sep 09, 2007 4:06 pm)
#87 of 151 Re: 97 caddy interior lights [bolivar] by sls002 Sep 09, 2007 (4:06 pm)
Replying to: bolivar (Sep 09, 2007 12:55 pm) A short circuit is a good guess.   Yes, the northstar water pumps do fail every now and then. Most water pumps fail before the engine does.
#89 of 151 95 deville courtesy lights stay on by kear Sep 12, 2007 (12:36 pm)
could somebody tell me how to remove door trim? short? where is the timer or relay?

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