There are no bulbs, it is a panel of mini-lights. You access this from the trunk area.
replace 2002 Buick rendevous motor mount
replace 2002 buick rendevous motor mount
There are actually 3 bulbs (GE #1141). On my De Ville there is a small compartment on the rear dash directly in front (from inside the car) the high mount brake light. Simply open the compartment and pull back the trim exposing the 3 bulbs, replace any or all nonworking bulbs.
They mount to the back of the dash cluster. The bulbs are exposed when the panel is removed.
You will need a Torx T15 driver and however many 921 bulbs you have burned out. There are 3 bulbs in the center high-mount brake light assembly. Remove the 3 Torx screws right on the face of the plastic bar and the assembly, with the 3 bulbs mounted, comes down. The bulbs pull straight out of their sockets. Push the new bulbs into the blade sockets. Put the assembly back in place and replace the 3 screws.
Look on the inside of the liftgate and you'll spot a plastic trim panel/piece directly behind the High Mount brake light. Gently pry this piece off and you'll have access to the bulb and socket.
If you are speaking of the front mount, it is a transmission mount, and you must lower the subframe to R&R.
1994 Buick Regal center high mount stop (third 3rd brake light) light bulb lamp replacement: Purchase the correct replacement center high mount stop (third 3rd brake light) bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the center high mount stop (third 3rd brake light) bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. If there are multiple bulbs, you may want to consider replacing all at the same time in order to keep brightness and color equal (optional).
I would guess that both of your brake light bulbs are burned out, and only the high mount bulbs are still working.
1993 Buick Skylark center high mount stop (third 3rd brake light) light bulb lamp replacement: Purchase the correct replacement center high mount stop (third 3rd brake light) bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the center high mount stop (third 3rd brake light) bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. If there are multiple bulbs, you may want to consider replacing all at the same time in order to keep brightness and color equal (optional).
To install the new bulbs, raise the hood and raise the headlights. Unhook the battery for safety. Look down between the rear of the headlights and you will see the wires that attach to the fog lights. Put your hand down in that space and twist the bulb mount. You should then be able to pull the light out. If you have small to average hands and forearm, and good dexterity, you should be able to can replace the bulb with this method. Do not touch the glass of the new lights. Remove the wire connector from the old bulb and replace it with the new. Twist the new bulb mount into place. Reconnect battery.
Remove the wiring harness from the high mount brake light. Remove the retaining screws. Reverse the process to install the new high mount brake light.