Question about 1996 Cadillac DeVille

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Finding out whats wrong with my car

My car will not receive any power to start, windows, ignition , lights or anything else besides moving my seats.

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Check the battery maxi fuse under the hood

Posted on Oct 15, 2008

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I have a 2007 Cadillac cts my key stuck my Windows stuck my flashers flashing and my car starts up so what's going on


Your key is stuck ? It won't move , it won't come out of the lock cylinder ? Can you shift it from park to drive , neutral etc... Are there any lights lit on the dash , yellow wrench light , service vehicle soon light ? any messages on Driver Information Center ? Your Cadillac has numerous electronic features controlled by modules - computers ! If your not familiar with electronics an these things I suggest you take it to someone who is . Does you Cadillac have console fool shifter ?
Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator: If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the vehicle may still be moving. The column ignition lock system consists of an ignition lock cylinder control actuator, and a park position switch that is located in the automatic transmission shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.
Linear Shift Assembly: If the vehicle is equipped with a column mounted gear shift, it has a linear shift assembly on the steering column. The linear shift assembly has a cable that runs from the linear shift assembly to the ignition lock cylinder case. The purpose of this cable is to prevent the ignition key from being turned to the OFF position when the transmission is in gear and the vehicle may still be moving. The linear shift assembly cable contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column.
The windows are no exception , they are controlled by modules in each door an are connected by a serial data communication bus !
The vehicle is equipped with power windows controlled by the door modules. Each passenger door window can be operated, either from a power window switch built into the driver door switch assembly (DDSA) , or, from a power window switch mounted locally on its associated door. The driver door window can be operated only from the driver door power window switch built into the DDSA.
When the driver door module (DDM) receives a driver door window switch request from the DDSA, the DDM examines the request and inspects to see if it has received any messages from any of the other vehicle modules prohibiting the movement. If no prohibitive messages have been received, the DDM then applies power and ground to the driver door window motor to move the window as requested.
When a passenger door module, passenger front door module (PDM), LH rear door module (LRDM), or RH rear door module (RRDM), receives a window switch request from, either the DDSA or the window switch mounted locally to its door, the passenger door module examines the request and inspects to see if it has received any messages from any of the other vehicle modules prohibiting the movement. If no prohibitive messages have been received, the passenger door module then applies power and ground to its associated window motor to move the window as requested.

Jun 30, 2015 | Cadillac Cars & Trucks

1 Answer

2004 avalanche. 4 gauges not working,says unknow driver no radio or no windows? security symbol light up as well


i'm a gm tech at a dealer that just had the same problem after about three days hunting down wires and not finding anything i found a bulletin describing this exact problem what happens is if ur vehicle has memory seats the wiring harness under the driver seat can get pinched from moving the seat inspect all the harnesses under the seat this fixed the one i was working on u can try moving the seat up and down or back and forth and see if u can make it stop doing it or make it act up good luck

Apr 30, 2011 | 2004 Chevrolet Avalanche

1 Answer

If car sits overnight battery dies. checked alternator and battery was told both are workin good.


Does it have heated seats? If so maybe they aren't turning off when the ignition is off. In that case, pull out the fuse for heated seats when you shut the car off. The inside of the fuse panel cover will have a diagram showing which fuse it is, likely a 15a. I'm not 100% positive on how to permanently remedy that particular problem beyond just pulling the fuse, it could however be a rather simple problem with the on/off switch not releasing the contacts when you move it to the off position.

Does it also have powered seats and/or power windows? It is also possible that either of the two are not shutting down the motor (window or seat motor) when the window or seat reaches the end of it's travel...this of course is not applicable if you don't have either thing all the way up, down or the seat all the way in one direction. The buttons can be stuck in one position and still activating power to the window or seat while they are at the end of it's travel and it would be rather obscure, both are devices that can still operate with the ignition off. In order to know for sure, after you shut off your car, sit quietly and listen carefully for anything that sounds like it is still running. It may sound like a high pitch whine or hum.

I would otherwise suggest that either your exterior or interior lights may still be running, but those things are a bit more obvious and aren't really enough draw on power, even with HID lights, to drain a battery overnight that was good enough to pass an electrical test. The same would apply to a security system.

Nov 11, 2010 | 2005 Volkswagen Jetta

2 Answers

1997 bonneville cranks but wont start also the windows will not roll up


I have a 1996 bonneville and I am having the same problem. if you read this and have had your car fixed by now please email me and let me know what the problem wwas because even professional machanics do not know the problem. my cars seems like it wants to start but would put as if it were out of gas then shuts off the windows will not work and also the seats will not move (electric) so if you have found a solution by now and actually read this please email me, my name is sara saaradixon2010 @yahoo .com

Oct 05, 2010 | 1994 Pontiac Bonneville

1 Answer

Driver side power seat won't move


well, check all your fuses and circuit breakers,next would be to check the connection at the swith, cad use a test light and also check for power and a good ground at the motors,it unlikely that all postions would stop at once and it be a motor,if they all stopped then its gottta be a fuse or switch or wiring.

Mar 26, 2010 | 2004 Saturn VUE

2 Answers

Ignition on 88 jeep yj not working


sounds like your ECM might be bad. Is there anything else that will turn on besides the lights? It could just be a main fuse. I'd start at the interior fuses if any and then go to the main fuse block and check for any loose wires or blown fuses first.

Jan 13, 2010 | 1988 Jeep Wrangler

1 Answer

I have a 2 year old SAAB Sport Combi. After driving through heavy rains, we discovered a big puddle of water on the floorboard behind the passenger seat. Mechanic could not find anything wrong with...


Water leaks can be difficult to find, so mechanic may not be at fault. You have to be ready to spend some time on the problem. To find it you are on the right track weith seals but not with radiator. If it only occurs in heavy rain radiator or coolant is not a factor. WEhat you need to do is start at like the rear or front door and check the weather strips. If they all look fine have all windows up in car. Have one person in the car with a flash light. The other person should be outside the car with a water hose. Have the person outside start at a point and spray the car with the hose. While inside person checks for water coming in. This has to be done moving the hose slowly so you can look and find leak. This can take some time thats why you should try to locate leak yourself even if you pay someone to repair it instead of repairing yourself. Finding it can be expensive due to not knowing how long it will take to find.

Sep 29, 2009 | 1993 Saab 9000 Hatchback

1 Answer

Similar issue


you may have issues with wirings. check the ground if there are anything loose. Check your battery using a voltmeter. The battery may need replacing.

Jun 29, 2009 | Saturn SL2 Cars & Trucks

2 Answers

2001 Bonnevile, wont start.


you have to pull up on the back seat and it will come up

Nov 11, 2008 | 2001 Pontiac Bonneville

2 Answers

91 Camry fuse problem


If there is anything, that is in any way "burnt", it needs to be replaced.
I would try a local auto recycler before I ordered a new light failure sensor.

Nov 10, 2008 | 1991 Toyota Camry

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