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Cadillac Repair/1999 Cadillac Deville turn lights and brake lights
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Question
I have a 1999 Cadillac Deville. The turn lights stopped working but if I manually turn the switch they work. At the same time the brake lights stopped working, I've checked the bulbs, I've changed the flasher still no brake and turn lights. The emergency lights do work though.
Hello,
The first thing I would tell you is change the flasher, but you already did and the flasher does not control the brake lights. There are commonly 2 flashers-one for the t.s. and one for the 4-way emergency.
You say you checked the bulbs. Since I am not looking at the vehicle-are the 4-ways the same bulbs that are used in the brake lights? Or are there seperate lenses?
The brake/tail light, t.s. are a dual filiment bulb and both filiments need to be checked for breakage, but I find it impossible to believe both brake lights would blow at the same time.
Get your opwner's manual and check fuse box locations. I believe on your car there is one under the dash and another in the trunk.
Check all fuses.
Now, I am thinking while writing here. I hate guessing and I am at a great disadvantage not being at the vehicle. If all fuses are good, my next thought would be to check the turn signal switch with a test light or meter. The brake lights and turn signals are fed fron the steering column at the turn signal switch.
After you do these checks, let me know if there was a problem with the turn signal switch, a fuse you did not check etc.
Rob
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Rob Painter
Expertise
Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?
Experience
Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.
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