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Interior Lights Not Working


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:unsure:<_< Something wierd is going on with my '99 Deville and I have almost lost all my hair trying to figure it out. They do not come on when opening the doors but will come on when I use the headlight switch (all of them light ) or push the switch on the map lights up front ( just the one I turn on ). Checked all fuses ( underhood and in the trunk ) and substituted the Inadvertant power relay with the one for the AC, since they are the same and the AC still works. Changed out the battery because the fuel door was popping open and a bad battery caused this symptom once before. Cleaned the cables, however, I didn't seperate the two cables when I did that. Have been trying to find the switches on the doors that activate them and either I am blind or just plain stupid, maybe a slight combination, but any way I can't seem to find any. I know there has to be a switch, even Cadillacs aren't magicians, although with the fart button, I know they are special. I did have a code that said I had an interior lamp fault (duh). Can anybody help this old fart figure this one out? After all, at my age, I don't have much hair left to lose.

Thanks,

tired, aching olebones (not to mention frustrated ) :wacko:

Edited by olebones
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Don't know for sure about your 99..but I have had some cars that had a button to turn "OFF" the interior lights when you opened the door.

If you have your owners manual...you may want to see if you have this "FEATURE" :D

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Don't let these caddy's outsmart you!! Your car checks to see if it is dark out befor bothering to turn on the lights. In your dash is a sensor that monitors ambient light. If this sensor opens your car will not feel the need to give you light. Just being helpful as Caddy's do. If I remember correctly, this will also cause the headlight Sentinal to not work correctly. If both problems exist, i think you have found the issue. It is a pretty inexpensie sensor from GM, around 25 bucks! Hope this gets to your problem!!

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  • 9 years later...

I had this problem in my 99 Seville STS, there is a switch up with the sun roof and map light switches.

its the slider switch that has off----on----auto close to the windshield.

Mine was in the off position (DUH!)

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I realize this is a old thread but want to mention that the Deville of that Era does not have a Off position for the domelamps.

I would first look at the sunload sensor.

The domelamps only come on when it is dark outside.  It also affects the vent position(usually not noticed)

If it is bad it does not know it is dark and therefore it never knows to the domelamps are needed.

The switches are in the door latches themselves. 

To date I have not had one fail on a Cadillac of this era.

The sunload sensor is located in the center of the defroster grate and is rather common. 

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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Funny you mention this.  The plunger in the a-pillar /door jam fail a lot too!

I note my 93s interior lights and chime dont come on when I open the drivers door.

If you open the pass. door they turn ON fine! 

Just swap the plungers around to test!

My moms 90 had this issue also. 

Dealer plunger replacement was METAL not plastic too!

Gotta wait a few days tho cuz the groundhog said spring! 

 

winter 1-19.JPG

winter 1-19 (27).JPG

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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The 94+ no longer use the plunger. The switch is internal to the latch in each door.

You are right though that the plunger style is common.

On the GM trucks the plunger switch used to break apart in the dash and turn the light on until you got into the dash to disconnect it 

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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94 and up in the door latch!

Non-serviceable too!

I wonder if somebody rebuilds them as I see ads for cores

Used on fleabay from 20 bucks.  New GM 150. 

Those switches on the side of the dash in the trucks!

I had 7 new GM pickups and snowplow rigs.  Broke a few of them!

Snow  melted away too!

 

caddy (13).JPG

car & truck pics 001.JPG

Edited by sonjaab

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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YUP

Need one of these for the drivers side:

https://www.ebay.com/itm/Door-Jamb-Switch-Front-Left-Right-Standard-DS251T/253215765695?fits=Year%3A1993|Model%3ADeVille&amp;epid=544158143&amp;hash=item3af4d5f4bf:g:qtIAAOSwsg1bnkcc:rk:4:pf:1&amp;frcectupt=true

China knockoff $7 bucks and change and free shipping!

 

 

 

switch.jpg

Edited by sonjaab

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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  • 2 weeks later...

I have to say that switch I replaced a few weeks ago died again!

It seemed a bit too long eyeballin both the old and new together.

It sorta prevents the door from closing easily too.

The other replacements I looked at at the parts store or online were all the same length and design

seemed  too long also !

Gotta look for GM replacement or parts yard hunt!

Them squarebodies are Slim pickins' at the yards near Syracuse or Tampa areas!

Its dark and cold here and need lights on when I open the door so the cure should be to take a

switch out of the back door and swap them!

They should be the same.

Edited by sonjaab

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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Heres a genuine GM unit: $9 bucks and change with free ship!

https://www.ebay.com/itm/ACDelco-D6063-Door-Jamb-Switch/323396480079?epid=193018737&amp;hash=item4b4beeac4f:g:cXMAAOSwjsBbctaA:rk:1:pf:0

 

s-l500.jpg

Edited by sonjaab

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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The OE GM replacement door switch came today.

Its BLASTIN' snow out there here in NY and I don't want to pull my Z-28 outside cuz the

plow guy is gonna come to clear the driveway and it will be in the way.

Supposed to be clear here tomorrow!

I wanna measure them side by side

 

caddy switch (2).JPG

caddy switch (3).JPG

Edited by sonjaab

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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Just curious if the original OP has resolved the issue with the 99.

It is a different style than the plunger one shown above.

Yes I feel NY has enough snow. We don't really need anymore

GM FAN FOREVER

Nice, clean, luxury= fine automobile

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Still blastin in Syracuse!  Haven't swapped the switch yet. 

Too nasty to put the Z-28 outside to do the swap.

Pic is this AM!

 

DSCF0006.JPG

93 DeVille-13 Chevy Impala

72 GTO - 77 Triumph Bonneville

84 Z-28

Syracuse NY

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