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It' likely, if bulbs are OK that the turn signal switch is burned out. If the switch fails, it won't allow the brake light signal through to the brake light wiring. Go to:http://www.2carpros.com/first_things/no_brake_lights.htm for the 4 page analysis. See: "(American Car) Both Lower Brake Lights Not Working"
To determine if the switch is bad test the incoming and outgoing current. If brake light switch power is present at the turn signal switch but not at any outgoing brake light wires, the turn signal switch has probably failed. This is a Buick design issue because keeping your foot on the brake or if the brake switch sticks keeping the brake lights on, the circuit will fail due to amperage overload.
What else can I help you with?
Why do your turn signals work but you have no brake lights on a 94 Buick Roadmaster sedan?
Sounds like it's not your bulb that is bad. It may be your brake switch isn't working.
On a 1994 Buick Roadmaster wagon no dash or tail lights fuse keeps blowing has new switch Now fuses don't blow but still no lights what else could be wrong?
Check your tow bar and trailer brake light wiring. It may be grounded. I had this problem with my 92 roadmaster wagon. Tom.
Where is the brake light switch on 2004 Buick Rendezvous?
I have 05 with no brake lights
How do you change brake pads on a 1992 Buick Roadmaster?
Buy the Chiltons or Haynes manual. It will walk you through the process.
1993 Buick Roadmaster 3rd brake light stay on?
you probably have a bad ground in the rear taillight assembly common problem
3rd brake light on Buick Roadmaster not working?
If the third brake light on your Buick Roadmaster is not working, first check the bulb to ensure it's not burnt out. If the bulb is functioning, inspect the wiring and connections for any damage or corrosion. Additionally, verify that the brake light fuse is intact and check the brake switch to ensure it's operating properly. If these components are all in good condition, it may require further diagnosis by a professional.
Why wont my headlights and brake lights come on in my 1995 buick century?
Have you checked the fuses?
What could cause the bottom brake lights on 1998 Explorer to be out while the dash lights and backup lights work?
Blown fuse or defective brake light switch.
How to replace Brake Light Switch 1993 Buick Roadmaster Does switch unscrew from retaining nut Or do you take retaining nut off first?
Remove retaining nut
How do you replace the fuse box in a 1995 Buick roadmaster?
Which one? There are two. One under the hood and one under the panel on the drivers side next to the emergency brake.
You have replaced the bulbs and the brake switch still no bottom brake lights on a 95 Chevy lumina?
Check sockets and grounds
How do you change brake lights on a citroen c4?
The brake lights are accessed through the rear hatch. Find the panel on the rear sides of the car. Pop out the panel and access the brake lights. Replace the bulbs.
