Question about 1988 Cadillac Sedan DeVille

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Turn signals do not work - 1988 Cadillac Sedan DeVille

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  • yadayada
    yadayada May 11, 2010

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Since there are not any specific fuse for just the right/left front/rear turn signals you have two possible concerns

the most likely is the turn signal flasher
if that doesn't fix it then you need a new turn signal switch

Posted on May 07, 2010

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Posted on Jan 02, 2017

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My rear turn signals are not working. front turn signals work rear parking lights work brake lights work


In the diagram for rear lamp, the top wires are voltage, the bottom black wire is ground. The brown wire on either side should be tail lamps, goes hot when you turn on the headlamp switch. The other top wire on either should be for turn signal. With everything turned on, is there voltage on that wire?
Because the front works and the rear don't, possible wiring circuit problem? The voltage for turn signals comes from bcm. The bcm knows when you turn on turn signal switch, either side, then the bcm sends voltage to turn signal lamp at the rear and front.

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Brake light trouble right side brake light will not come on but both flashers work also turn signals work older ford truck what could the problem


I have to think the problem is inside the turn signal switch, a poor internal connection. You know the brake signal first goes through the turn switch before it goes to the bulbs. That is why the brake lights and rear turn signal lights share the same filament in the bulb, and the same wire going to those lights. The only difference is the turning side light is affected by the turn signal flasher, causing blinking, while the other side- the non turning side-does not go through the flasher relay, but straight to the bulb from the turn signal switch. Change your turn signal switch and I believe you will solve the problem. Let me know, okay?

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1 Answer

Left turn signal will not work


either wrong signal bulb or short in left turn signal wiring if both left signal lamps not working.if only one of left turn signal dont work could have corroded bulb socket spray a little electronic cleaner in bulb sockets see if left signal work.

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1 Answer

I have a 92 chevy s10 and my front passenger turn signal has went out and soon after my rear driver side turn signal and running light has went out. I have tried swapping the bulbs that work to the ones...


https://s1.postimg.org/89tia75ozz/turn_signal.jpg

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This is for turn signals. Get at the turn signal switch. See the purple wire, L terminal on top of turn signal switch in diagram, that should go hot with key on, use jumper wire from that terminal to one of the wires on bottom of turn signal switch in diagram, those are, front/rear, left/right turn signals. If the turns signals work properly with the jumper, but, other wise don't, the problem should be the turn signal switch. If it still doesn't work properly, you would have to check wiring circuits.
Sometimes a faulty ground can cause weird problems. Sometimes the bulb doesn't make good contact in the bulb socket? Try putting a little pressure on the bulb in the bulb socket, see if it starts working?

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1 Answer

1997 Chevy Tahoe both turn signals stopped working


Sounds like the flasher unit to me. Normally the emergency flasher and turn signal are separate.

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replace the turn signal switch it self, mine did the same thing with the left turn signal, put in fuse and it will continue to flash... went to junk yard pulled one out of a 97 avenger just like mine, swapped them out and now it works fine. looked to be like some corrosion... to repace: 3 screws under columb, 2 screws on side of signal switch (black plastic side). unplug and replace

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1 Answer

Turn signal problems


Turn signals have a relay (its a small switch that charges and discharges current) which controls your turn signals blinking speed and interval. This is most likely your problem. You should be able to get a new one at your local parts store. Follow these instructions, in this order, and let me know how it works.

Step 1:Turn on the hazard lights and walk around the Taurus checking that all four turn signal lights are working. If any of them are not working, replace the bulbs. A non-working bulb in any of the turn signals will often make the turn signals appear that a flasher is going bad.

Step 2:
Locate the fuse box and check the fuses for the turn signals. There may be more than one. Replace any fuses that are blown and then recheck the turn signals again. If they still aren't working properly, then move on to replace the flasher. Step 3: Look for a round, silver-colored object near the fuse box. Put your finger on the object and turn on the turn signal. You should be able to feel a mechanical clicking as the turn signal blinks. This is the flasher. Step 4: Pull the silver flasher out of the socket and replace it with the new one. Each of the flashers should have two pins sticking out of the bottom side. Start the Taurus and recheck the turn signals to ensure that they work. Joel

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replaced turn signal flashers and muti switch turn signal still won't work Why?

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1 Answer

Turn signal


Now replace the flasher unit! Frankster016

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