Yhese are fed from different sorces so I would check the groiunds on the lights.
I have a chev cavlier 1995 and the running lights do no work---on the dash the green light keeps blinking----what should I do?
The lights on your Buick could be out for a number of reasons. It could be blown fuses, faulty wiring, or dead bulbs. Your mechanic would be able to test this.
Take off the steering wheel. There is a turn signal bar that you have to clean the pins and bend them out to put more pressure on the contacts. Then put it back together.
check the bulbs?
I had this problem with my 1994 Buick LeSabre and it no longer happened when I installed a new battery. It's been at least 6 months now with no recurrence of the problem. Before the new battery, I noticed that if I waited about 5 minutes after turning off the car, I could get the lights to turn off. Seemed like something had to cool down.
To repair the Reatta running lights check the fuse first. If the fuse is blown ad a replacement blows then check the lights and wiring for any shorts.
My turn signals are not working on my 92 buick regal.
I had the same problem with my 87 Riv. It was a burnt out bulb in the rear of the car. My front signals did work and as they run on different circuits, check and replace the bulbs. Access to the back lights are inside the trunk back.
Some bulbs have two filaments in them. One could be burnt out and the other will still work. These bulbs will have two posts at the base rather than just one.
If the taillights needing replacement are not the turn-signals or brake lights: Open the trunk.There seven 10mm nuts that need to be open, 3-(left),1-(center), 3-(right). You will ned a deep 10mm socket. then pull entire section on trunk lid forward enough to get your hand behind. Twist appropriate light socket and remove. Replace bulb and reverse your steps. This is also covered in the owner's manual.
Probably a ground problem. Find the common ground for the lights.
Sounds like it's not your bulb that is bad. It may be your brake switch isn't working.