go to napa or auto zone. tell them you need a rear bulb. they will ask what kind of vehicle you have. enter it into system. system tells them what item is instock for it. then test it.
Check for corrosion on the connector or attached wire.
Bulb is blown. Replace bulb.
Remove the tail light cover in the cargo compartment. Remove the wiring harness. Remove the blinker retaining screws. Reverse the process to install the new blinker.
The rear tail light assembly had problems with the sockets and circuit board. My guess is you will need to replace the socket and circuit board assembly for the passenger side rear tail light.
remove tail light, remove burnt bulb, replace burnt bulb, test if it works, then put tail light back on....
trunk should be a panel
It would depend on what model of Buick you are referring to.
All you have to do is open the trunk and look an the side that the light is out and see if there are some screws undo the screws pull the plastice open and you should be able to get to the light's and blinker.
the light burnt out and you need a new one?
replace the rear bulb if one side is out, if you had a bad fuse none of your turn signals would work.
If they turn on but don't blink, you probably need to replace the signal flasher relay.
Generally, the tail "light" and the tail light "blinker" are two different bulbs. Check the blinker bulb first. If it is OK, then it is likely a fuse to a flasher unit.